Finding the Fourth Proportional to 39,491.88, 59,240.88 and 13,196.71

Step by Step Solution

1. Step 1: Write the proportion equation
   39,491.88 : 59,240.88 = 13,196.71 : x
2. Step 2: Convert to fraction form
   39,491.88/59,240.88 = 13,196.71/x
3. Step 3: Cross multiply
   39,491.88x = 59,240.88 × 13,196.71
4. Step 4: Simplify right side
   39,491.88x = 781,784,713.50
5. Step 5: Solve for x
   x = 781,784,713.50/39,491.88
6. Step 6: Final answer
   x = 19,796.09