Finding the Fourth Proportional to 22,876.92, 31,571.56 and 13,317

Step by Step Solution

1. Step 1: Write the proportion equation
   22,876.92 : 31,571.56 = 13,317 : x
2. Step 2: Convert to fraction form
   22,876.92/31,571.56 = 13,317/x
3. Step 3: Cross multiply
   22,876.92x = 31,571.56 × 13,317
4. Step 4: Simplify right side
   22,876.92x = 420,438,464.52
5. Step 5: Solve for x
   x = 420,438,464.52/22,876.92
6. Step 6: Final answer
   x = 18,378.28