Finding the Fourth Proportional to 91.69, 126.23 and 82.48

Step by Step Solution

1. Step 1: Write the proportion equation
   91.69 : 126.23 = 82.48 : x
2. Step 2: Convert to fraction form
   91.69/126.23 = 82.48/x
3. Step 3: Cross multiply
   91.69x = 126.23 × 82.48
4. Step 4: Simplify right side
   91.69x = 10,410.72
5. Step 5: Solve for x
   x = 10,410.72/91.69
6. Step 6: Final answer
   x = 113.55