Finding the Fourth Proportional to 22,520.16, 31,077.76 and 12,584.16

Step by Step Solution

1. Step 1: Write the proportion equation
   22,520.16 : 31,077.76 = 12,584.16 : x
2. Step 2: Convert to fraction form
   22,520.16/31,077.76 = 12,584.16/x
3. Step 3: Cross multiply
   22,520.16x = 31,077.76 × 12,584.16
4. Step 4: Simplify right side
   22,520.16x = 391,087,504.28
5. Step 5: Solve for x
   x = 391,087,504.28/22,520.16
6. Step 6: Final answer
   x = 17,366.11