Finding the Fourth Proportional to 11,196.14, 15,448.46 and 7,216.65

Step by Step Solution

1. Step 1: Write the proportion equation
   11,196.14 : 15,448.46 = 7,216.65 : x
2. Step 2: Convert to fraction form
   11,196.14/15,448.46 = 7,216.65/x
3. Step 3: Cross multiply
   11,196.14x = 15,448.46 × 7,216.65
4. Step 4: Simplify right side
   11,196.14x = 111,486,092.78
5. Step 5: Solve for x
   x = 111,486,092.78/11,196.14
6. Step 6: Final answer
   x = 9,957.55