Finding the Fourth Proportional to 11,480.72, 15,838.56 and 7,224.24

Step by Step Solution

1. Step 1: Write the proportion equation
   11,480.72 : 15,838.56 = 7,224.24 : x
2. Step 2: Convert to fraction form
   11,480.72/15,838.56 = 7,224.24/x
3. Step 3: Cross multiply
   11,480.72x = 15,838.56 × 7,224.24
4. Step 4: Simplify right side
   11,480.72x = 114,421,558.69
5. Step 5: Solve for x
   x = 114,421,558.69/11,480.72
6. Step 6: Final answer
   x = 9,966.41