Finding the Fourth Proportional to 5,767.56, 8,648.61 and 2,991.46

Step by Step Solution

1. Step 1: Write the proportion equation
   5,767.56 : 8,648.61 = 2,991.46 : x
2. Step 2: Convert to fraction form
   5,767.56/8,648.61 = 2,991.46/x
3. Step 3: Cross multiply
   5,767.56x = 8,648.61 × 2,991.46
4. Step 4: Simplify right side
   5,767.56x = 25,871,912.67
5. Step 5: Solve for x
   x = 25,871,912.67/5,767.56
6. Step 6: Final answer
   x = 4,485.76