Finding the Fourth Proportional to 6,691.69, 9,234.86 and 4,039.05

Step by Step Solution

1. Step 1: Write the proportion equation
   6,691.69 : 9,234.86 = 4,039.05 : x
2. Step 2: Convert to fraction form
   6,691.69/9,234.86 = 4,039.05/x
3. Step 3: Cross multiply
   6,691.69x = 9,234.86 × 4,039.05
4. Step 4: Simplify right side
   6,691.69x = 37,300,061.28
5. Step 5: Solve for x
   x = 37,300,061.28/6,691.69
6. Step 6: Final answer
   x = 5,574.09