Finding the Fourth Proportional to 9,718.56, 13,413.24 and 5,471.55

Step by Step Solution

1. Step 1: Write the proportion equation
   9,718.56 : 13,413.24 = 5,471.55 : x
2. Step 2: Convert to fraction form
   9,718.56/13,413.24 = 5,471.55/x
3. Step 3: Cross multiply
   9,718.56x = 13,413.24 × 5,471.55
4. Step 4: Simplify right side
   9,718.56x = 73,391,213.32
5. Step 5: Solve for x
   x = 73,391,213.32/9,718.56
6. Step 6: Final answer
   x = 7,551.66