Finding the Fourth Proportional to 6,311.43, 8,711.82 and 3,661.47

Step by Step Solution

1. Step 1: Write the proportion equation
   6,311.43 : 8,711.82 = 3,661.47 : x
2. Step 2: Convert to fraction form
   6,311.43/8,711.82 = 3,661.47/x
3. Step 3: Cross multiply
   6,311.43x = 8,711.82 × 3,661.47
4. Step 4: Simplify right side
   6,311.43x = 31,898,067.58
5. Step 5: Solve for x
   x = 31,898,067.58/6,311.43
6. Step 6: Final answer
   x = 5,054.02