Finding the Fourth Proportional to 8,317, 12,468.51 and 3,390.18

Step by Step Solution

1. Step 1: Write the proportion equation
   8,317 : 12,468.51 = 3,390.18 : x
2. Step 2: Convert to fraction form
   8,317/12,468.51 = 3,390.18/x
3. Step 3: Cross multiply
   8,317x = 12,468.51 × 3,390.18
4. Step 4: Simplify right side
   8,317x = 42,270,493.23
5. Step 5: Solve for x
   x = 42,270,493.23/8,317
6. Step 6: Final answer
   x = 5,082.42