Finding the Fourth Proportional to 8,413.47, 11,608.52 and 5,225.31

Step by Step Solution

1. Step 1: Write the proportion equation
   8,413.47 : 11,608.52 = 5,225.31 : x
2. Step 2: Convert to fraction form
   8,413.47/11,608.52 = 5,225.31/x
3. Step 3: Cross multiply
   8,413.47x = 11,608.52 × 5,225.31
4. Step 4: Simplify right side
   8,413.47x = 60,658,089.51
5. Step 5: Solve for x
   x = 60,658,089.51/8,413.47
6. Step 6: Final answer
   x = 7,209.64