Finding the Fourth Proportional to 22,571.62, 31,147.18 and 12,499.43

Step by Step Solution

1. Step 1: Write the proportion equation
   22,571.62 : 31,147.18 = 12,499.43 : x
2. Step 2: Convert to fraction form
   22,571.62/31,147.18 = 12,499.43/x
3. Step 3: Cross multiply
   22,571.62x = 31,147.18 × 12,499.43
4. Step 4: Simplify right side
   22,571.62x = 389,321,809.12
5. Step 5: Solve for x
   x = 389,321,809.12/22,571.62
6. Step 6: Final answer
   x = 17,248.29