Finding the Fourth Proportional to 8,818.24, 12,168.42 and 5,280.16

Step by Step Solution

1. Step 1: Write the proportion equation
   8,818.24 : 12,168.42 = 5,280.16 : x
2. Step 2: Convert to fraction form
   8,818.24/12,168.42 = 5,280.16/x
3. Step 3: Cross multiply
   8,818.24x = 12,168.42 × 5,280.16
4. Step 4: Simplify right side
   8,818.24x = 64,251,204.55
5. Step 5: Solve for x
   x = 64,251,204.55/8,818.24
6. Step 6: Final answer
   x = 7,286.17