Finding the Fourth Proportional to 22,718.32, 31,352.14 and 13,760.72

Step by Step Solution

1. Step 1: Write the proportion equation
   22,718.32 : 31,352.14 = 13,760.72 : x
2. Step 2: Convert to fraction form
   22,718.32/31,352.14 = 13,760.72/x
3. Step 3: Cross multiply
   22,718.32x = 31,352.14 × 13,760.72
4. Step 4: Simplify right side
   22,718.32x = 431,428,019.94
5. Step 5: Solve for x
   x = 431,428,019.94/22,718.32
6. Step 6: Final answer
   x = 18,990.31