Finding the Fourth Proportional to 11,016.88, 15,215.92 and 7,256.86

Step by Step Solution

1. Step 1: Write the proportion equation
   11,016.88 : 15,215.92 = 7,256.86 : x
2. Step 2: Convert to fraction form
   11,016.88/15,215.92 = 7,256.86/x
3. Step 3: Cross multiply
   11,016.88x = 15,215.92 × 7,256.86
4. Step 4: Simplify right side
   11,016.88x = 110,419,801.21
5. Step 5: Solve for x
   x = 110,419,801.21/11,016.88
6. Step 6: Final answer
   x = 10,022.78