Finding the Fourth Proportional to 22,521.27, 31,079.93 and 12,449.87

Step by Step Solution

1. Step 1: Write the proportion equation
   22,521.27 : 31,079.93 = 12,449.87 : x
2. Step 2: Convert to fraction form
   22,521.27/31,079.93 = 12,449.87/x
3. Step 3: Cross multiply
   22,521.27x = 31,079.93 × 12,449.87
4. Step 4: Simplify right side
   22,521.27x = 386,940,870.46
5. Step 5: Solve for x
   x = 386,940,870.46/22,521.27
6. Step 6: Final answer
   x = 17,181.13