Finding the Fourth Proportional to 22,521.34, 31,079.46 and 12,585.34

Step by Step Solution

1. Step 1: Write the proportion equation
   22,521.34 : 31,079.46 = 12,585.34 : x
2. Step 2: Convert to fraction form
   22,521.34/31,079.46 = 12,585.34/x
3. Step 3: Cross multiply
   22,521.34x = 31,079.46 × 12,585.34
4. Step 4: Simplify right side
   22,521.34x = 391,145,571.12
5. Step 5: Solve for x
   x = 391,145,571.12/22,521.34
6. Step 6: Final answer
   x = 17,367.78