Finding the Fourth Proportional to 6,399.50, 8,831.00 and 3,567.19

Step by Step Solution

1. Step 1: Write the proportion equation
   6,399.50 : 8,831.00 = 3,567.19 : x
2. Step 2: Convert to fraction form
   6,399.50/8,831.00 = 3,567.19/x
3. Step 3: Cross multiply
   6,399.50x = 8,831.00 × 3,567.19
4. Step 4: Simplify right side
   6,399.50x = 31,501,841.73
5. Step 5: Solve for x
   x = 31,501,841.73/6,399.50
6. Step 6: Final answer
   x = 4,922.55