Finding the Fourth Proportional to 22,591.10, 31,174.31 and 12,518.96

Step by Step Solution

1. Step 1: Write the proportion equation
   22,591.10 : 31,174.31 = 12,518.96 : x
2. Step 2: Convert to fraction form
   22,591.10/31,174.31 = 12,518.96/x
3. Step 3: Cross multiply
   22,591.10x = 31,174.31 × 12,518.96
4. Step 4: Simplify right side
   22,591.10x = 390,269,721.45
5. Step 5: Solve for x
   x = 390,269,721.45/22,591.10
6. Step 6: Final answer
   x = 17,275.37