Finding the Fourth Proportional to 11,496.32, 17,240.88 and 7,621.28

Step by Step Solution

1. Step 1: Write the proportion equation
   11,496.32 : 17,240.88 = 7,621.28 : x
2. Step 2: Convert to fraction form
   11,496.32/17,240.88 = 7,621.28/x
3. Step 3: Cross multiply
   11,496.32x = 17,240.88 × 7,621.28
4. Step 4: Simplify right side
   11,496.32x = 131,397,573.93
5. Step 5: Solve for x
   x = 131,397,573.93/11,496.32
6. Step 6: Final answer
   x = 11,429.53