Finding the Fourth Proportional to 11,196.72, 15,452.94 and 7,229.40

Step by Step Solution

1. Step 1: Write the proportion equation
   11,196.72 : 15,452.94 = 7,229.40 : x
2. Step 2: Convert to fraction form
   11,196.72/15,452.94 = 7,229.40/x
3. Step 3: Cross multiply
   11,196.72x = 15,452.94 × 7,229.40
4. Step 4: Simplify right side
   11,196.72x = 111,715,484.44
5. Step 5: Solve for x
   x = 111,715,484.44/11,196.72
6. Step 6: Final answer
   x = 9,977.52