Finding the Fourth Proportional to 10,208.79, 14,086.92 and 5,731.56

Step by Step Solution

1. Step 1: Write the proportion equation
   10,208.79 : 14,086.92 = 5,731.56 : x
2. Step 2: Convert to fraction form
   10,208.79/14,086.92 = 5,731.56/x
3. Step 3: Cross multiply
   10,208.79x = 14,086.92 × 5,731.56
4. Step 4: Simplify right side
   10,208.79x = 80,740,027.20
5. Step 5: Solve for x
   x = 80,740,027.20/10,208.79
6. Step 6: Final answer
   x = 7,908.87