Finding the Fourth Proportional to 11.22, 15.46 and 7.98

Step by Step Solution

1. Step 1: Write the proportion equation
   11.22 : 15.46 = 7.98 : x
2. Step 2: Convert to fraction form
   11.22/15.46 = 7.98/x
3. Step 3: Cross multiply
   11.22x = 15.46 × 7.98
4. Step 4: Simplify right side
   11.22x = 123.37
5. Step 5: Solve for x
   x = 123.37/11.22
6. Step 6: Final answer
   x = 11.00