Finding the Fourth Proportional to 22,665.31, 31,269.17 and 13,103.43

Step by Step Solution

1. Step 1: Write the proportion equation
   22,665.31 : 31,269.17 = 13,103.43 : x
2. Step 2: Convert to fraction form
   22,665.31/31,269.17 = 13,103.43/x
3. Step 3: Cross multiply
   22,665.31x = 31,269.17 × 13,103.43
4. Step 4: Simplify right side
   22,665.31x = 409,733,380.25
5. Step 5: Solve for x
   x = 409,733,380.25/22,665.31
6. Step 6: Final answer
   x = 18,077.55