Finding the Fourth Proportional to 22,493.17, 31,040.39 and 12,422.29

Step by Step Solution

1. Step 1: Write the proportion equation
   22,493.17 : 31,040.39 = 12,422.29 : x
2. Step 2: Convert to fraction form
   22,493.17/31,040.39 = 12,422.29/x
3. Step 3: Cross multiply
   22,493.17x = 31,040.39 × 12,422.29
4. Step 4: Simplify right side
   22,493.17x = 385,592,508.98
5. Step 5: Solve for x
   x = 385,592,508.98/22,493.17
6. Step 6: Final answer
   x = 17,142.65