Finding the Fourth Proportional to 11,105.06, 16,660.21 and 3,608.60

Step by Step Solution

1. Step 1: Write the proportion equation
   11,105.06 : 16,660.21 = 3,608.60 : x
2. Step 2: Convert to fraction form
   11,105.06/16,660.21 = 3,608.60/x
3. Step 3: Cross multiply
   11,105.06x = 16,660.21 × 3,608.60
4. Step 4: Simplify right side
   11,105.06x = 60,119,932.46
5. Step 5: Solve for x
   x = 60,119,932.46/11,105.06
6. Step 6: Final answer
   x = 5,413.74