Finding the Fourth Proportional to 8,416.25, 12,624.69 and 3,150.70

Step by Step Solution

1. Step 1: Write the proportion equation
   8,416.25 : 12,624.69 = 3,150.70 : x
2. Step 2: Convert to fraction form
   8,416.25/12,624.69 = 3,150.70/x
3. Step 3: Cross multiply
   8,416.25x = 12,624.69 × 3,150.70
4. Step 4: Simplify right side
   8,416.25x = 39,776,610.78
5. Step 5: Solve for x
   x = 39,776,610.78/8,416.25
6. Step 6: Final answer
   x = 4,726.17