Finding the Fourth Proportional to 8,310.87, 12,471.98 and 3,379.59

Step by Step Solution

1. Step 1: Write the proportion equation
   8,310.87 : 12,471.98 = 3,379.59 : x
2. Step 2: Convert to fraction form
   8,310.87/12,471.98 = 3,379.59/x
3. Step 3: Cross multiply
   8,310.87x = 12,471.98 × 3,379.59
4. Step 4: Simplify right side
   8,310.87x = 42,150,161.99
5. Step 5: Solve for x
   x = 42,150,161.99/8,310.87
6. Step 6: Final answer
   x = 5,071.69