Finding the Fourth Proportional to 5,500.62, 7,591.23 and 3,109.78

Step by Step Solution

1. Step 1: Write the proportion equation
   5,500.62 : 7,591.23 = 3,109.78 : x
2. Step 2: Convert to fraction form
   5,500.62/7,591.23 = 3,109.78/x
3. Step 3: Cross multiply
   5,500.62x = 7,591.23 × 3,109.78
4. Step 4: Simplify right side
   5,500.62x = 23,607,055.23
5. Step 5: Solve for x
   x = 23,607,055.23/5,500.62
6. Step 6: Final answer
   x = 4,291.71