The fourth proportional to 12, 18 and 26 is?
Choose the correct answer.
A) 21
B) 66
C) 39
D) 88
E) 61
(18*26)/12= 
<gadget id="calculator">(18*26)/12</gadget>
<output>39</output>
39   Answer:39
<result>C</result>
The fourth proportional to 12, 18 and 26 is?