Finding the Fourth Proportional to 9,253.76, 12,769.72 and 5,717.28

Step by Step Solution

1. Step 1: Write the proportion equation
   9,253.76 : 12,769.72 = 5,717.28 : x
2. Step 2: Convert to fraction form
   9,253.76/12,769.72 = 5,717.28/x
3. Step 3: Cross multiply
   9,253.76x = 12,769.72 × 5,717.28
4. Step 4: Simplify right side
   9,253.76x = 73,008,064.76
5. Step 5: Solve for x
   x = 73,008,064.76/9,253.76
6. Step 6: Final answer
   x = 7,889.56