Finding the Fourth Proportional to 8,429.38, 12,645.69 and 3,234.85

Step by Step Solution

1. Step 1: Write the proportion equation
   8,429.38 : 12,645.69 = 3,234.85 : x
2. Step 2: Convert to fraction form
   8,429.38/12,645.69 = 3,234.85/x
3. Step 3: Cross multiply
   8,429.38x = 12,645.69 × 3,234.85
4. Step 4: Simplify right side
   8,429.38x = 40,906,910.30
5. Step 5: Solve for x
   x = 40,906,910.30/8,429.38
6. Step 6: Final answer
   x = 4,852.90