Finding the Fourth Proportional to 9,663.55, 13,335.06 and 5,413.93

Step by Step Solution

1. Step 1: Write the proportion equation
   9,663.55 : 13,335.06 = 5,413.93 : x
2. Step 2: Convert to fraction form
   9,663.55/13,335.06 = 5,413.93/x
3. Step 3: Cross multiply
   9,663.55x = 13,335.06 × 5,413.93
4. Step 4: Simplify right side
   9,663.55x = 72,195,081.39
5. Step 5: Solve for x
   x = 72,195,081.39/9,663.55
6. Step 6: Final answer
   x = 7,470.87