Finding the Fourth Proportional to 16,413.72, 22,650.62 and 9,339.98

Step by Step Solution

1. Step 1: Write the proportion equation
   16,413.72 : 22,650.62 = 9,339.98 : x
2. Step 2: Convert to fraction form
   16,413.72/22,650.62 = 9,339.98/x
3. Step 3: Cross multiply
   16,413.72x = 22,650.62 × 9,339.98
4. Step 4: Simplify right side
   16,413.72x = 211,556,337.79
5. Step 5: Solve for x
   x = 211,556,337.79/16,413.72
6. Step 6: Final answer
   x = 12,888.99