Finding the Fourth Proportional to 11,015, 15,196.72 and 7,240.24

Step by Step Solution

1. Step 1: Write the proportion equation
   11,015 : 15,196.72 = 7,240.24 : x
2. Step 2: Convert to fraction form
   11,015/15,196.72 = 7,240.24/x
3. Step 3: Cross multiply
   11,015x = 15,196.72 × 7,240.24
4. Step 4: Simplify right side
   11,015x = 110,027,900.01
5. Step 5: Solve for x
   x = 110,027,900.01/11,015
6. Step 6: Final answer
   x = 9,988.92