Finding the Fourth Proportional to 9,390.89, 12,962.69 and 5,413.59

Step by Step Solution

1. Step 1: Write the proportion equation
   9,390.89 : 12,962.69 = 5,413.59 : x
2. Step 2: Convert to fraction form
   9,390.89/12,962.69 = 5,413.59/x
3. Step 3: Cross multiply
   9,390.89x = 12,962.69 × 5,413.59
4. Step 4: Simplify right side
   9,390.89x = 70,174,661.89
5. Step 5: Solve for x
   x = 70,174,661.89/9,390.89
6. Step 6: Final answer
   x = 7,472.64