Finding the Fourth Proportional to 8,866.69, 13,304.69 and 3,939.86

Step by Step Solution

1. Step 1: Write the proportion equation
   8,866.69 : 13,304.69 = 3,939.86 : x
2. Step 2: Convert to fraction form
   8,866.69/13,304.69 = 3,939.86/x
3. Step 3: Cross multiply
   8,866.69x = 13,304.69 × 3,939.86
4. Step 4: Simplify right side
   8,866.69x = 52,418,596.24
5. Step 5: Solve for x
   x = 52,418,596.24/8,866.69
6. Step 6: Final answer
   x = 5,911.86