Finding the Fourth Proportional to 6,891.97, 9,510.72 and 3,908.08

Step by Step Solution

1. Step 1: Write the proportion equation
   6,891.97 : 9,510.72 = 3,908.08 : x
2. Step 2: Convert to fraction form
   6,891.97/9,510.72 = 3,908.08/x
3. Step 3: Cross multiply
   6,891.97x = 9,510.72 × 3,908.08
4. Step 4: Simplify right side
   6,891.97x = 37,168,654.62
5. Step 5: Solve for x
   x = 37,168,654.62/6,891.97
6. Step 6: Final answer
   x = 5,393.04