Finding the Fourth Proportional to 12,142.50, 16,747.92 and 8,564.82

Step by Step Solution

1. Step 1: Write the proportion equation
   12,142.50 : 16,747.92 = 8,564.82 : x
2. Step 2: Convert to fraction form
   12,142.50/16,747.92 = 8,564.82/x
3. Step 3: Cross multiply
   12,142.50x = 16,747.92 × 8,564.82
4. Step 4: Simplify right side
   12,142.50x = 143,442,920.17
5. Step 5: Solve for x
   x = 143,442,920.17/12,142.50
6. Step 6: Final answer
   x = 11,813.29