Finding the Fourth Proportional to 11,025.72, 16,472.16 and 8,790.12

Step by Step Solution

1. Step 1: Write the proportion equation
   11,025.72 : 16,472.16 = 8,790.12 : x
2. Step 2: Convert to fraction form
   11,025.72/16,472.16 = 8,790.12/x
3. Step 3: Cross multiply
   11,025.72x = 16,472.16 × 8,790.12
4. Step 4: Simplify right side
   11,025.72x = 144,792,263.06
5. Step 5: Solve for x
   x = 144,792,263.06/11,025.72
6. Step 6: Final answer
   x = 13,132.23