Finding the Fourth Proportional to 5,749.56, 8,623.20 and 2,628.72

Step by Step Solution

1. Step 1: Write the proportion equation
   5,749.56 : 8,623.20 = 2,628.72 : x
2. Step 2: Convert to fraction form
   5,749.56/8,623.20 = 2,628.72/x
3. Step 3: Cross multiply
   5,749.56x = 8,623.20 × 2,628.72
4. Step 4: Simplify right side
   5,749.56x = 22,667,978.30
5. Step 5: Solve for x
   x = 22,667,978.30/5,749.56
6. Step 6: Final answer
   x = 3,942.56