Finding the Fourth Proportional to 5,128.97, 7,665.33 and 3,745.22

Step by Step Solution

1. Step 1: Write the proportion equation
   5,128.97 : 7,665.33 = 3,745.22 : x
2. Step 2: Convert to fraction form
   5,128.97/7,665.33 = 3,745.22/x
3. Step 3: Cross multiply
   5,128.97x = 7,665.33 × 3,745.22
4. Step 4: Simplify right side
   5,128.97x = 28,708,308.90
5. Step 5: Solve for x
   x = 28,708,308.90/5,128.97
6. Step 6: Final answer
   x = 5,597.29