Finding the Fourth Proportional to 11,062.72, 15,252.72 and 7,077.28

Step by Step Solution

1. Step 1: Write the proportion equation
   11,062.72 : 15,252.72 = 7,077.28 : x
2. Step 2: Convert to fraction form
   11,062.72/15,252.72 = 7,077.28/x
3. Step 3: Cross multiply
   11,062.72x = 15,252.72 × 7,077.28
4. Step 4: Simplify right side
   11,062.72x = 107,947,770.20
5. Step 5: Solve for x
   x = 107,947,770.20/11,062.72
6. Step 6: Final answer
   x = 9,757.80