Finding the Fourth Proportional to 6,309.50, 8,707.41 and 3,515

Step by Step Solution

1. Step 1: Write the proportion equation
   6,309.50 : 8,707.41 = 3,515 : x
2. Step 2: Convert to fraction form
   6,309.50/8,707.41 = 3,515/x
3. Step 3: Cross multiply
   6,309.50x = 8,707.41 × 3,515
4. Step 4: Simplify right side
   6,309.50x = 30,606,546.15
5. Step 5: Solve for x
   x = 30,606,546.15/6,309.50
6. Step 6: Final answer
   x = 4,850.87