Finding the Fourth Proportional to 8,308.40, 12,464.95 and 3,381.57

Step by Step Solution

1. Step 1: Write the proportion equation
   8,308.40 : 12,464.95 = 3,381.57 : x
2. Step 2: Convert to fraction form
   8,308.40/12,464.95 = 3,381.57/x
3. Step 3: Cross multiply
   8,308.40x = 12,464.95 × 3,381.57
4. Step 4: Simplify right side
   8,308.40x = 42,151,092.52
5. Step 5: Solve for x
   x = 42,151,092.52/8,308.40
6. Step 6: Final answer
   x = 5,073.31