Finding the Fourth Proportional to 5,466.72, 7,544.24 and 3,109.20

Step by Step Solution

1. Step 1: Write the proportion equation
   5,466.72 : 7,544.24 = 3,109.20 : x
2. Step 2: Convert to fraction form
   5,466.72/7,544.24 = 3,109.20/x
3. Step 3: Cross multiply
   5,466.72x = 7,544.24 × 3,109.20
4. Step 4: Simplify right side
   5,466.72x = 23,456,551.01
5. Step 5: Solve for x
   x = 23,456,551.01/5,466.72
6. Step 6: Final answer
   x = 4,290.79