Finding the Fourth Proportional to 13,516.28, 20,276.59 and 5,726.24

Step by Step Solution

1. Step 1: Write the proportion equation
   13,516.28 : 20,276.59 = 5,726.24 : x
2. Step 2: Convert to fraction form
   13,516.28/20,276.59 = 5,726.24/x
3. Step 3: Cross multiply
   13,516.28x = 20,276.59 × 5,726.24
4. Step 4: Simplify right side
   13,516.28x = 116,108,620.72
5. Step 5: Solve for x
   x = 116,108,620.72/13,516.28
6. Step 6: Final answer
   x = 8,590.28