Finding the Fourth Proportional to 5,128.80, 7,674.40 and 4,443.52

Step by Step Solution

1. Step 1: Write the proportion equation
   5,128.80 : 7,674.40 = 4,443.52 : x
2. Step 2: Convert to fraction form
   5,128.80/7,674.40 = 4,443.52/x
3. Step 3: Cross multiply
   5,128.80x = 7,674.40 × 4,443.52
4. Step 4: Simplify right side
   5,128.80x = 34,101,349.89
5. Step 5: Solve for x
   x = 34,101,349.89/5,128.80
6. Step 6: Final answer
   x = 6,648.99