Finding the Fourth Proportional to 8,301.87, 12,446.82 and 3,915

Step by Step Solution

1. Step 1: Write the proportion equation
   8,301.87 : 12,446.82 = 3,915 : x
2. Step 2: Convert to fraction form
   8,301.87/12,446.82 = 3,915/x
3. Step 3: Cross multiply
   8,301.87x = 12,446.82 × 3,915
4. Step 4: Simplify right side
   8,301.87x = 48,729,300.30
5. Step 5: Solve for x
   x = 48,729,300.30/8,301.87
6. Step 6: Final answer
   x = 5,869.68