Finding the Fourth Proportional to 9,142.72, 12,616.86 and 5,163.82

Step by Step Solution

1. Step 1: Write the proportion equation
   9,142.72 : 12,616.86 = 5,163.82 : x
2. Step 2: Convert to fraction form
   9,142.72/12,616.86 = 5,163.82/x
3. Step 3: Cross multiply
   9,142.72x = 12,616.86 × 5,163.82
4. Step 4: Simplify right side
   9,142.72x = 65,151,194.01
5. Step 5: Solve for x
   x = 65,151,194.01/9,142.72
6. Step 6: Final answer
   x = 7,126.02