Finding the Fourth Proportional to 8,291.10, 12,439.89 and 3,097.38

Step by Step Solution

1. Step 1: Write the proportion equation
   8,291.10 : 12,439.89 = 3,097.38 : x
2. Step 2: Convert to fraction form
   8,291.10/12,439.89 = 3,097.38/x
3. Step 3: Cross multiply
   8,291.10x = 12,439.89 × 3,097.38
4. Step 4: Simplify right side
   8,291.10x = 38,531,066.49
5. Step 5: Solve for x
   x = 38,531,066.49/8,291.10
6. Step 6: Final answer
   x = 4,647.28