Finding the Fourth Proportional to 6,708.47, 10,066.79 and 4,239.89

Step by Step Solution

1. Step 1: Write the proportion equation
   6,708.47 : 10,066.79 = 4,239.89 : x
2. Step 2: Convert to fraction form
   6,708.47/10,066.79 = 4,239.89/x
3. Step 3: Cross multiply
   6,708.47x = 10,066.79 × 4,239.89
4. Step 4: Simplify right side
   6,708.47x = 42,682,042.52
5. Step 5: Solve for x
   x = 42,682,042.52/6,708.47
6. Step 6: Final answer
   x = 6,362.42