Finding the Fourth Proportional to 6,441.81, 9,665.49 and 3,479.67

Step by Step Solution

1. Step 1: Write the proportion equation
   6,441.81 : 9,665.49 = 3,479.67 : x
2. Step 2: Convert to fraction form
   6,441.81/9,665.49 = 3,479.67/x
3. Step 3: Cross multiply
   6,441.81x = 9,665.49 × 3,479.67
4. Step 4: Simplify right side
   6,441.81x = 33,632,715.59
5. Step 5: Solve for x
   x = 33,632,715.59/6,441.81
6. Step 6: Final answer
   x = 5,221.00