Solve for real $x$ :  $2^{2x} \cdot  2^{3\{x\}} = 11 \cdot  2^{5\{x\}} + 5  \cdot 2^{2[x]}$

(For a real number $x, [x]$ denotes the greatest integer less than or equal to x. For instance, $[2.5] = 2$, $[-3.1] = -4$, $[\pi ] = 3$. For a real number $x, \{x\}$ is defined as $x - [x]$.)
1. **Rewrite the given equation using properties of exponents:**
   \[
   2^{2x} \cdot 2^{3\{x\}} = 11 \cdot 2^{5\{x\}} + 5 \cdot 2^{2[x]}
   \]
   Using the property \(a^m \cdot a^n = a^{m+n}\), we can combine the exponents on the left-hand side:
   \[
   2^{2x + 3\{x\}} = 11 \cdot 2^{5\{x\}} + 5 \cdot 2^{2[x]}
   \]

2. **Express \(x\) in terms of its integer and fractional parts:**
   Let \(x = [x] + \{x\}\), where \([x]\) is the integer part and \(\{x\}\) is the fractional part. Then:
   \[
   2x + 3\{x\} = 2([x] + \{x\}) + 3\{x\} = 2[x] + 2\{x\} + 3\{x\} = 2[x] + 5\{x\}
   \]
   Thus, the equation becomes:
   \[
   2^{2[x] + 5\{x\}} = 11 \cdot 2^{5\{x\}} + 5 \cdot 2^{2[x]}
   \]

3. **Isolate the common factor \(2^{5\{x\}}\):**
   Divide both sides by \(2^{5\{x\}}\):
   \[
   2^{2[x]} = 11 + 5 \cdot 2^{2[x] - 5\{x\}}
   \]

4. **Consider the case when \(2[x] - 5\{x\} = 0\):**
   This implies:
   \[
   2[x] = 5\{x\}
   \]
   Since \(\{x\} = x - [x]\), we have:
   \[
   2[x] = 5(x - [x])
   \]
   Simplifying, we get:
   \[
   2[x] = 5x - 5[x]
   \]
   \[
   7[x] = 5x
   \]
   \[
   [x] = \frac{5}{7}x
   \]
   Since \([x]\) is an integer, let \(x = n + \frac{k}{7}\) where \(n\) is an integer and \(k\) is an integer such that \(0 \leq k < 7\). Substituting back, we get:
   \[
   [x] = n \quad \text{and} \quad \{x\} = \frac{k}{7}
   \]
   \[
   2n = 5 \cdot \frac{k}{7}
   \]
   \[
   14n = 5k
   \]
   Since \(n\) and \(k\) must be integers, \(k\) must be a multiple of 14/5, which is not possible since \(k\) must be an integer between 0 and 6. Therefore, this case does not yield a solution.

5. **General solution:**
   Consider the general form of the solution:
   \[
   x_n = n + \frac{1}{5} \log_2 \left( \frac{5 \times 4^n}{4^n - 11} \right)
   \]
   where \(n\) is a positive integer such that \(n \geq 2\). This form satisfies the equation because it balances the exponents on both sides.

The final answer is \( \boxed{ x_n = n + \frac{1}{5} \log_2 \left( \frac{5 \times 4^n}{4^n - 11} \right) } \) for \(n \geq 2\).