Finding the Fourth Proportional to 8,583.50, 12,871.28 and 3,903.32

Step by Step Solution

1. Step 1: Write the proportion equation
   8,583.50 : 12,871.28 = 3,903.32 : x
2. Step 2: Convert to fraction form
   8,583.50/12,871.28 = 3,903.32/x
3. Step 3: Cross multiply
   8,583.50x = 12,871.28 × 3,903.32
4. Step 4: Simplify right side
   8,583.50x = 50,240,640.78
5. Step 5: Solve for x
   x = 50,240,640.78/8,583.50
6. Step 6: Final answer
   x = 5,853.17