Finding the Fourth Proportional to 22,640.92, 31,243.88 and 12,569.06

Step by Step Solution

1. Step 1: Write the proportion equation
   22,640.92 : 31,243.88 = 12,569.06 : x
2. Step 2: Convert to fraction form
   22,640.92/31,243.88 = 12,569.06/x
3. Step 3: Cross multiply
   22,640.92x = 31,243.88 × 12,569.06
4. Step 4: Simplify right side
   22,640.92x = 392,706,311.89
5. Step 5: Solve for x
   x = 392,706,311.89/22,640.92
6. Step 6: Final answer
   x = 17,344.98