Finding the Fourth Proportional to 11,642.13, 16,063.52 and 9,761.31

Step by Step Solution

1. Step 1: Write the proportion equation
   11,642.13 : 16,063.52 = 9,761.31 : x
2. Step 2: Convert to fraction form
   11,642.13/16,063.52 = 9,761.31/x
3. Step 3: Cross multiply
   11,642.13x = 16,063.52 × 9,761.31
4. Step 4: Simplify right side
   11,642.13x = 156,800,949.60
5. Step 5: Solve for x
   x = 156,800,949.60/11,642.13
6. Step 6: Final answer
   x = 13,468.41