Finding the Fourth Proportional to 5,803.61, 8,686.15 and 5,284.80

Step by Step Solution

1. Step 1: Write the proportion equation
   5,803.61 : 8,686.15 = 5,284.80 : x
2. Step 2: Convert to fraction form
   5,803.61/8,686.15 = 5,284.80/x
3. Step 3: Cross multiply
   5,803.61x = 8,686.15 × 5,284.80
4. Step 4: Simplify right side
   5,803.61x = 45,904,565.52
5. Step 5: Solve for x
   x = 45,904,565.52/5,803.61
6. Step 6: Final answer
   x = 7,909.66