Finding the Fourth Proportional to 8,317.50, 12,479.37 and 3,388.38

Step by Step Solution

1. Step 1: Write the proportion equation
   8,317.50 : 12,479.37 = 3,388.38 : x
2. Step 2: Convert to fraction form
   8,317.50/12,479.37 = 3,388.38/x
3. Step 3: Cross multiply
   8,317.50x = 12,479.37 × 3,388.38
4. Step 4: Simplify right side
   8,317.50x = 42,284,847.72
5. Step 5: Solve for x
   x = 42,284,847.72/8,317.50
6. Step 6: Final answer
   x = 5,083.84