Finding the Fourth Proportional to 9,142.79, 12,616.96 and 5,163.82

Step by Step Solution

1. Step 1: Write the proportion equation
   9,142.79 : 12,616.96 = 5,163.82 : x
2. Step 2: Convert to fraction form
   9,142.79/12,616.96 = 5,163.82/x
3. Step 3: Cross multiply
   9,142.79x = 12,616.96 × 5,163.82
4. Step 4: Simplify right side
   9,142.79x = 65,151,710.39
5. Step 5: Solve for x
   x = 65,151,710.39/9,142.79
6. Step 6: Final answer
   x = 7,126.02