Finding the Fourth Proportional to 22,472.40, 31,013.24 and 12,403.10

Step by Step Solution

1. Step 1: Write the proportion equation
   22,472.40 : 31,013.24 = 12,403.10 : x
2. Step 2: Convert to fraction form
   22,472.40/31,013.24 = 12,403.10/x
3. Step 3: Cross multiply
   22,472.40x = 31,013.24 × 12,403.10
4. Step 4: Simplify right side
   22,472.40x = 384,660,099.96
5. Step 5: Solve for x
   x = 384,660,099.96/22,472.40
6. Step 6: Final answer
   x = 17,117.00