Finding the Fourth Proportional to 6,891.82, 9,510.14 and 3,908.15

Step by Step Solution

1. Step 1: Write the proportion equation
   6,891.82 : 9,510.14 = 3,908.15 : x
2. Step 2: Convert to fraction form
   6,891.82/9,510.14 = 3,908.15/x
3. Step 3: Cross multiply
   6,891.82x = 9,510.14 × 3,908.15
4. Step 4: Simplify right side
   6,891.82x = 37,167,051.52
5. Step 5: Solve for x
   x = 37,167,051.52/6,891.82
6. Step 6: Final answer
   x = 5,392.92