Finding the Fourth Proportional to 16,241.72, 22,413.12 and 9,168.80

Step by Step Solution

1. Step 1: Write the proportion equation
   16,241.72 : 22,413.12 = 9,168.80 : x
2. Step 2: Convert to fraction form
   16,241.72/22,413.12 = 9,168.80/x
3. Step 3: Cross multiply
   16,241.72x = 22,413.12 × 9,168.80
4. Step 4: Simplify right side
   16,241.72x = 205,501,414.66
5. Step 5: Solve for x
   x = 205,501,414.66/16,241.72
6. Step 6: Final answer
   x = 12,652.69