Finding the Fourth Proportional to 7,311.61, 10,969.03 and 3,413.89

Step by Step Solution

1. Step 1: Write the proportion equation
   7,311.61 : 10,969.03 = 3,413.89 : x
2. Step 2: Convert to fraction form
   7,311.61/10,969.03 = 3,413.89/x
3. Step 3: Cross multiply
   7,311.61x = 10,969.03 × 3,413.89
4. Step 4: Simplify right side
   7,311.61x = 37,447,061.83
5. Step 5: Solve for x
   x = 37,447,061.83/7,311.61
6. Step 6: Final answer
   x = 5,121.59