Finding the Fourth Proportional to 14,755.50, 20,362.59 and 8,131.50

Step by Step Solution

1. Step 1: Write the proportion equation
   14,755.50 : 20,362.59 = 8,131.50 : x
2. Step 2: Convert to fraction form
   14,755.50/20,362.59 = 8,131.50/x
3. Step 3: Cross multiply
   14,755.50x = 20,362.59 × 8,131.50
4. Step 4: Simplify right side
   14,755.50x = 165,578,400.59
5. Step 5: Solve for x
   x = 165,578,400.59/14,755.50
6. Step 6: Final answer
   x = 11,221.47