Finding the Fourth Proportional to 22,510.72, 31,065.92 and 12,440.32

Step by Step Solution

1. Step 1: Write the proportion equation
   22,510.72 : 31,065.92 = 12,440.32 : x
2. Step 2: Convert to fraction form
   22,510.72/31,065.92 = 12,440.32/x
3. Step 3: Cross multiply
   22,510.72x = 31,065.92 × 12,440.32
4. Step 4: Simplify right side
   22,510.72x = 386,469,985.89
5. Step 5: Solve for x
   x = 386,469,985.89/22,510.72
6. Step 6: Final answer
   x = 17,168.26