Finding the Fourth Proportional to 22,509.40, 31,061.82 and 12,573.40

Step by Step Solution

1. Step 1: Write the proportion equation
   22,509.40 : 31,061.82 = 12,573.40 : x
2. Step 2: Convert to fraction form
   22,509.40/31,061.82 = 12,573.40/x
3. Step 3: Cross multiply
   22,509.40x = 31,061.82 × 12,573.40
4. Step 4: Simplify right side
   22,509.40x = 390,552,687.59
5. Step 5: Solve for x
   x = 390,552,687.59/22,509.40
6. Step 6: Final answer
   x = 17,350.65