Finding the Fourth Proportional to 22,818.88, 31,475.28 and 13,380.76

Step by Step Solution

1. Step 1: Write the proportion equation
   22,818.88 : 31,475.28 = 13,380.76 : x
2. Step 2: Convert to fraction form
   22,818.88/31,475.28 = 13,380.76/x
3. Step 3: Cross multiply
   22,818.88x = 31,475.28 × 13,380.76
4. Step 4: Simplify right side
   22,818.88x = 421,163,167.61
5. Step 5: Solve for x
   x = 421,163,167.61/22,818.88
6. Step 6: Final answer
   x = 18,456.79