Finding the Fourth Proportional to 22,540.06, 31,105.28 and 12,331.18

Step by Step Solution

1. Step 1: Write the proportion equation
   22,540.06 : 31,105.28 = 12,331.18 : x
2. Step 2: Convert to fraction form
   22,540.06/31,105.28 = 12,331.18/x
3. Step 3: Cross multiply
   22,540.06x = 31,105.28 × 12,331.18
4. Step 4: Simplify right side
   22,540.06x = 383,564,651.10
5. Step 5: Solve for x
   x = 383,564,651.10/22,540.06
6. Step 6: Final answer
   x = 17,017.02