Finding the Fourth Proportional to 13,613.18, 20,414.48 and 5,292.10

Step by Step Solution

1. Step 1: Write the proportion equation
   13,613.18 : 20,414.48 = 5,292.10 : x
2. Step 2: Convert to fraction form
   13,613.18/20,414.48 = 5,292.10/x
3. Step 3: Cross multiply
   13,613.18x = 20,414.48 × 5,292.10
4. Step 4: Simplify right side
   13,613.18x = 108,035,380.77
5. Step 5: Solve for x
   x = 108,035,380.77/13,613.18
6. Step 6: Final answer
   x = 7,936.09