Finding the Fourth Proportional to 5,682.54, 8,480.61 and 5,306.55

Step by Step Solution

1. Step 1: Write the proportion equation
   5,682.54 : 8,480.61 = 5,306.55 : x
2. Step 2: Convert to fraction form
   5,682.54/8,480.61 = 5,306.55/x
3. Step 3: Cross multiply
   5,682.54x = 8,480.61 × 5,306.55
4. Step 4: Simplify right side
   5,682.54x = 45,002,781.00
5. Step 5: Solve for x
   x = 45,002,781.00/5,682.54
6. Step 6: Final answer
   x = 7,919.48