Finding the Fourth Proportional to 10,935.10, 16,390.22 and 9,616.28

Step by Step Solution

1. Step 1: Write the proportion equation
   10,935.10 : 16,390.22 = 9,616.28 : x
2. Step 2: Convert to fraction form
   10,935.10/16,390.22 = 9,616.28/x
3. Step 3: Cross multiply
   10,935.10x = 16,390.22 × 9,616.28
4. Step 4: Simplify right side
   10,935.10x = 157,612,944.78
5. Step 5: Solve for x
   x = 157,612,944.78/10,935.10
6. Step 6: Final answer
   x = 14,413.49