Finding the Fourth Proportional to 11,040.72, 15,238.56 and 7,061.28

Step by Step Solution

1. Step 1: Write the proportion equation
   11,040.72 : 15,238.56 = 7,061.28 : x
2. Step 2: Convert to fraction form
   11,040.72/15,238.56 = 7,061.28/x
3. Step 3: Cross multiply
   11,040.72x = 15,238.56 × 7,061.28
4. Step 4: Simplify right side
   11,040.72x = 107,603,738.96
5. Step 5: Solve for x
   x = 107,603,738.96/11,040.72
6. Step 6: Final answer
   x = 9,746.08