Finding the Fourth Proportional to 7,413.60, 10,359.60 and 7,413.60

Step by Step Solution

1. Step 1: Write the proportion equation
   7,413.60 : 10,359.60 = 7,413.60 : x
2. Step 2: Convert to fraction form
   7,413.60/10,359.60 = 7,413.60/x
3. Step 3: Cross multiply
   7,413.60x = 10,359.60 × 7,413.60
4. Step 4: Simplify right side
   7,413.60x = 76,801,930.56
5. Step 5: Solve for x
   x = 76,801,930.56/7,413.60
6. Step 6: Final answer
   x = 10,359.60