Finding the Fourth Proportional to 5,510.69, 7,604.50 and 3,120.61

Step by Step Solution

1. Step 1: Write the proportion equation
   5,510.69 : 7,604.50 = 3,120.61 : x
2. Step 2: Convert to fraction form
   5,510.69/7,604.50 = 3,120.61/x
3. Step 3: Cross multiply
   5,510.69x = 7,604.50 × 3,120.61
4. Step 4: Simplify right side
   5,510.69x = 23,730,671.85
5. Step 5: Solve for x
   x = 23,730,671.85/5,510.69
6. Step 6: Final answer
   x = 4,306.30