Finding the Fourth Proportional to 7,112.35, 10,669.61 and 3,413.89

Step by Step Solution

1. Step 1: Write the proportion equation
   7,112.35 : 10,669.61 = 3,413.89 : x
2. Step 2: Convert to fraction form
   7,112.35/10,669.61 = 3,413.89/x
3. Step 3: Cross multiply
   7,112.35x = 10,669.61 × 3,413.89
4. Step 4: Simplify right side
   7,112.35x = 36,424,874.88
5. Step 5: Solve for x
   x = 36,424,874.88/7,112.35
6. Step 6: Final answer
   x = 5,121.36