Finding the Fourth Proportional to 9,149.40, 12,626.42 and 5,170.42

Step by Step Solution

1. Step 1: Write the proportion equation
   9,149.40 : 12,626.42 = 5,170.42 : x
2. Step 2: Convert to fraction form
   9,149.40/12,626.42 = 5,170.42/x
3. Step 3: Cross multiply
   9,149.40x = 12,626.42 × 5,170.42
4. Step 4: Simplify right side
   9,149.40x = 65,283,894.50
5. Step 5: Solve for x
   x = 65,283,894.50/9,149.40
6. Step 6: Final answer
   x = 7,135.32