Finding the Fourth Proportional to 8,429.31, 12,644.57 and 3,235.18

Step by Step Solution

1. Step 1: Write the proportion equation
   8,429.31 : 12,644.57 = 3,235.18 : x
2. Step 2: Convert to fraction form
   8,429.31/12,644.57 = 3,235.18/x
3. Step 3: Cross multiply
   8,429.31x = 12,644.57 × 3,235.18
4. Step 4: Simplify right side
   8,429.31x = 40,907,443.80
5. Step 5: Solve for x
   x = 40,907,443.80/8,429.31
6. Step 6: Final answer
   x = 4,853.00