Finding the Fourth Proportional to 12,768.28, 19,158.22 and 5,744.42

Step by Step Solution

1. Step 1: Write the proportion equation
   12,768.28 : 19,158.22 = 5,744.42 : x
2. Step 2: Convert to fraction form
   12,768.28/19,158.22 = 5,744.42/x
3. Step 3: Cross multiply
   12,768.28x = 19,158.22 × 5,744.42
4. Step 4: Simplify right side
   12,768.28x = 110,052,845.37
5. Step 5: Solve for x
   x = 110,052,845.37/12,768.28
6. Step 6: Final answer
   x = 8,619.24