Finding the Fourth Proportional to 5,571.91, 8,308.75 and 5,521.94

Step by Step Solution

1. Step 1: Write the proportion equation
   5,571.91 : 8,308.75 = 5,521.94 : x
2. Step 2: Convert to fraction form
   5,571.91/8,308.75 = 5,521.94/x
3. Step 3: Cross multiply
   5,571.91x = 8,308.75 × 5,521.94
4. Step 4: Simplify right side
   5,571.91x = 45,880,441.42
5. Step 5: Solve for x
   x = 45,880,441.42/5,571.91
6. Step 6: Final answer
   x = 8,234.24