Finding the Fourth Proportional to 22,560.38, 31,132.88 and 12,488.82

Step by Step Solution

1. Step 1: Write the proportion equation
   22,560.38 : 31,132.88 = 12,488.82 : x
2. Step 2: Convert to fraction form
   22,560.38/31,132.88 = 12,488.82/x
3. Step 3: Cross multiply
   22,560.38x = 31,132.88 × 12,488.82
4. Step 4: Simplify right side
   22,560.38x = 388,812,934.40
5. Step 5: Solve for x
   x = 388,812,934.40/22,560.38
6. Step 6: Final answer
   x = 17,234.33