Finding the Fourth Proportional to 6,441.12, 9,664.79 and 3,321.27

Step by Step Solution

1. Step 1: Write the proportion equation
   6,441.12 : 9,664.79 = 3,321.27 : x
2. Step 2: Convert to fraction form
   6,441.12/9,664.79 = 3,321.27/x
3. Step 3: Cross multiply
   6,441.12x = 9,664.79 × 3,321.27
4. Step 4: Simplify right side
   6,441.12x = 32,099,360.48
5. Step 5: Solve for x
   x = 32,099,360.48/6,441.12
6. Step 6: Final answer
   x = 4,983.51