Finding the Fourth Proportional to 9,722.69, 13,413.32 and 7,210.98

Step by Step Solution

1. Step 1: Write the proportion equation
   9,722.69 : 13,413.32 = 7,210.98 : x
2. Step 2: Convert to fraction form
   9,722.69/13,413.32 = 7,210.98/x
3. Step 3: Cross multiply
   9,722.69x = 13,413.32 × 7,210.98
4. Step 4: Simplify right side
   9,722.69x = 96,723,264.10
5. Step 5: Solve for x
   x = 96,723,264.10/9,722.69
6. Step 6: Final answer
   x = 9,948.20