Finding the Fourth Proportional to 5,571.84, 8,359.15 and 3,931.59

Step by Step Solution

1. Step 1: Write the proportion equation
   5,571.84 : 8,359.15 = 3,931.59 : x
2. Step 2: Convert to fraction form
   5,571.84/8,359.15 = 3,931.59/x
3. Step 3: Cross multiply
   5,571.84x = 8,359.15 × 3,931.59
4. Step 4: Simplify right side
   5,571.84x = 32,864,732.42
5. Step 5: Solve for x
   x = 32,864,732.42/5,571.84
6. Step 6: Final answer
   x = 5,898.36