Finding the Fourth Proportional to 6,447.33, 9,661.82 and 3,815.37

Step by Step Solution

1. Step 1: Write the proportion equation
   6,447.33 : 9,661.82 = 3,815.37 : x
2. Step 2: Convert to fraction form
   6,447.33/9,661.82 = 3,815.37/x
3. Step 3: Cross multiply
   6,447.33x = 9,661.82 × 3,815.37
4. Step 4: Simplify right side
   6,447.33x = 36,863,399.10
5. Step 5: Solve for x
   x = 36,863,399.10/6,447.33
6. Step 6: Final answer
   x = 5,717.62