Finding the Fourth Proportional to 9,144.05, 12,617.03 and 5,163.71

Step by Step Solution

1. Step 1: Write the proportion equation
   9,144.05 : 12,617.03 = 5,163.71 : x
2. Step 2: Convert to fraction form
   9,144.05/12,617.03 = 5,163.71/x
3. Step 3: Cross multiply
   9,144.05x = 12,617.03 × 5,163.71
4. Step 4: Simplify right side
   9,144.05x = 65,150,633.81
5. Step 5: Solve for x
   x = 65,150,633.81/9,144.05
6. Step 6: Final answer
   x = 7,124.92