Finding the Fourth Proportional to 5,603.39, 7,732.20 and 3,085.10

Step by Step Solution

1. Step 1: Write the proportion equation
   5,603.39 : 7,732.20 = 3,085.10 : x
2. Step 2: Convert to fraction form
   5,603.39/7,732.20 = 3,085.10/x
3. Step 3: Cross multiply
   5,603.39x = 7,732.20 × 3,085.10
4. Step 4: Simplify right side
   5,603.39x = 23,854,610.22
5. Step 5: Solve for x
   x = 23,854,610.22/5,603.39
6. Step 6: Final answer
   x = 4,257.17