Finding the Fourth Proportional to 10,242.72, 14,134.44 and 5,767.20

Step by Step Solution

1. Step 1: Write the proportion equation
   10,242.72 : 14,134.44 = 5,767.20 : x
2. Step 2: Convert to fraction form
   10,242.72/14,134.44 = 5,767.20/x
3. Step 3: Cross multiply
   10,242.72x = 14,134.44 × 5,767.20
4. Step 4: Simplify right side
   10,242.72x = 81,516,142.37
5. Step 5: Solve for x
   x = 81,516,142.37/10,242.72
6. Step 6: Final answer
   x = 7,958.45