Finding the Fourth Proportional to 6,311.07, 8,709.57 and 3,659.31

Step by Step Solution

1. Step 1: Write the proportion equation
   6,311.07 : 8,709.57 = 3,659.31 : x
2. Step 2: Convert to fraction form
   6,311.07/8,709.57 = 3,659.31/x
3. Step 3: Cross multiply
   6,311.07x = 8,709.57 × 3,659.31
4. Step 4: Simplify right side
   6,311.07x = 31,871,016.60
5. Step 5: Solve for x
   x = 31,871,016.60/6,311.07
6. Step 6: Final answer
   x = 5,050.02