Finding the Fourth Proportional to 6,443.25, 8,891.69 and 3,648.75

Step by Step Solution

1. Step 1: Write the proportion equation
   6,443.25 : 8,891.69 = 3,648.75 : x
2. Step 2: Convert to fraction form
   6,443.25/8,891.69 = 3,648.75/x
3. Step 3: Cross multiply
   6,443.25x = 8,891.69 × 3,648.75
4. Step 4: Simplify right side
   6,443.25x = 32,443,553.89
5. Step 5: Solve for x
   x = 32,443,553.89/6,443.25
6. Step 6: Final answer
   x = 5,035.28