Finding the Fourth Proportional to 8,770.09, 12,105.17 and 5,413.45

Step by Step Solution

1. Step 1: Write the proportion equation
   8,770.09 : 12,105.17 = 5,413.45 : x
2. Step 2: Convert to fraction form
   8,770.09/12,105.17 = 5,413.45/x
3. Step 3: Cross multiply
   8,770.09x = 12,105.17 × 5,413.45
4. Step 4: Simplify right side
   8,770.09x = 65,530,705.47
5. Step 5: Solve for x
   x = 65,530,705.47/8,770.09
6. Step 6: Final answer
   x = 7,472.07