Finding the Fourth Proportional to 5,674.50, 7,831.85 and 5,425.43

Step by Step Solution

1. Step 1: Write the proportion equation
   5,674.50 : 7,831.85 = 5,425.43 : x
2. Step 2: Convert to fraction form
   5,674.50/7,831.85 = 5,425.43/x
3. Step 3: Cross multiply
   5,674.50x = 7,831.85 × 5,425.43
4. Step 4: Simplify right side
   5,674.50x = 42,491,087.66
5. Step 5: Solve for x
   x = 42,491,087.66/5,674.50
6. Step 6: Final answer
   x = 7,488.08