Finding the Fourth Proportional to 82.96, 124.46 and 28.12

Step by Step Solution

1. Step 1: Write the proportion equation
   82.96 : 124.46 = 28.12 : x
2. Step 2: Convert to fraction form
   82.96/124.46 = 28.12/x
3. Step 3: Cross multiply
   82.96x = 124.46 × 28.12
4. Step 4: Simplify right side
   82.96x = 3,500.21
5. Step 5: Solve for x
   x = 3,500.21/82.96
6. Step 6: Final answer
   x = 42.19