Finding the Fourth Proportional to 8,317.10, 12,477.09 and 3,389.42

Step by Step Solution

1. Step 1: Write the proportion equation
   8,317.10 : 12,477.09 = 3,389.42 : x
2. Step 2: Convert to fraction form
   8,317.10/12,477.09 = 3,389.42/x
3. Step 3: Cross multiply
   8,317.10x = 12,477.09 × 3,389.42
4. Step 4: Simplify right side
   8,317.10x = 42,290,098.39
5. Step 5: Solve for x
   x = 42,290,098.39/8,317.10
6. Step 6: Final answer
   x = 5,084.72