Finding the Fourth Proportional to 5,131.34, 7,694.25 and 2,660.03

Step by Step Solution

1. Step 1: Write the proportion equation
   5,131.34 : 7,694.25 = 2,660.03 : x
2. Step 2: Convert to fraction form
   5,131.34/7,694.25 = 2,660.03/x
3. Step 3: Cross multiply
   5,131.34x = 7,694.25 × 2,660.03
4. Step 4: Simplify right side
   5,131.34x = 20,466,935.83
5. Step 5: Solve for x
   x = 20,466,935.83/5,131.34
6. Step 6: Final answer
   x = 3,988.61