Finding the Fourth Proportional to 16,242.70, 22,413.54 and 9,168.16

Step by Step Solution

1. Step 1: Write the proportion equation
   16,242.70 : 22,413.54 = 9,168.16 : x
2. Step 2: Convert to fraction form
   16,242.70/22,413.54 = 9,168.16/x
3. Step 3: Cross multiply
   16,242.70x = 22,413.54 × 9,168.16
4. Step 4: Simplify right side
   16,242.70x = 205,490,920.89
5. Step 5: Solve for x
   x = 205,490,920.89/16,242.70
6. Step 6: Final answer
   x = 12,651.28