Finding the Fourth Proportional to 9,718.96, 13,413.72 and 5,528.56

Step by Step Solution

1. Step 1: Write the proportion equation
   9,718.96 : 13,413.72 = 5,528.56 : x
2. Step 2: Convert to fraction form
   9,718.96/13,413.72 = 5,528.56/x
3. Step 3: Cross multiply
   9,718.96x = 13,413.72 × 5,528.56
4. Step 4: Simplify right side
   9,718.96x = 74,158,555.84
5. Step 5: Solve for x
   x = 74,158,555.84/9,718.96
6. Step 6: Final answer
   x = 7,630.30