Finding the Fourth Proportional to 5,700.79, 8,555.20 and 2,003.31

Step by Step Solution

1. Step 1: Write the proportion equation
   5,700.79 : 8,555.20 = 2,003.31 : x
2. Step 2: Convert to fraction form
   5,700.79/8,555.20 = 2,003.31/x
3. Step 3: Cross multiply
   5,700.79x = 8,555.20 × 2,003.31
4. Step 4: Simplify right side
   5,700.79x = 17,138,717.71
5. Step 5: Solve for x
   x = 17,138,717.71/5,700.79
6. Step 6: Final answer
   x = 3,006.38