Finding the Fourth Proportional to 22,542.82, 31,108.80 and 12,470.50

Step by Step Solution

1. Step 1: Write the proportion equation
   22,542.82 : 31,108.80 = 12,470.50 : x
2. Step 2: Convert to fraction form
   22,542.82/31,108.80 = 12,470.50/x
3. Step 3: Cross multiply
   22,542.82x = 31,108.80 × 12,470.50
4. Step 4: Simplify right side
   22,542.82x = 387,942,290.40
5. Step 5: Solve for x
   x = 387,942,290.40/22,542.82
6. Step 6: Final answer
   x = 17,209.13