Finding the Fourth Proportional to 5,895.72, 8,139.47 and 3,908.97

Step by Step Solution

1. Step 1: Write the proportion equation
   5,895.72 : 8,139.47 = 3,908.97 : x
2. Step 2: Convert to fraction form
   5,895.72/8,139.47 = 3,908.97/x
3. Step 3: Cross multiply
   5,895.72x = 8,139.47 × 3,908.97
4. Step 4: Simplify right side
   5,895.72x = 31,816,924.50
5. Step 5: Solve for x
   x = 31,816,924.50/5,895.72
6. Step 6: Final answer
   x = 5,396.61