Finding the Fourth Proportional to 6,665.39, 9,983.70 and 3,150.09

Step by Step Solution

1. Step 1: Write the proportion equation
   6,665.39 : 9,983.70 = 3,150.09 : x
2. Step 2: Convert to fraction form
   6,665.39/9,983.70 = 3,150.09/x
3. Step 3: Cross multiply
   6,665.39x = 9,983.70 × 3,150.09
4. Step 4: Simplify right side
   6,665.39x = 31,449,516.09
5. Step 5: Solve for x
   x = 31,449,516.09/6,665.39
6. Step 6: Final answer
   x = 4,718.33