Finding the Fourth Proportional to 9,144.85, 12,620.36 and 5,167.24

Step by Step Solution

1. Step 1: Write the proportion equation
   9,144.85 : 12,620.36 = 5,167.24 : x
2. Step 2: Convert to fraction form
   9,144.85/12,620.36 = 5,167.24/x
3. Step 3: Cross multiply
   9,144.85x = 12,620.36 × 5,167.24
4. Step 4: Simplify right side
   9,144.85x = 65,212,452.30
5. Step 5: Solve for x
   x = 65,212,452.30/9,144.85
6. Step 6: Final answer
   x = 7,131.06