Finding the Fourth Proportional to 82.29, 113.52 and 52.79

Step by Step Solution

1. Step 1: Write the proportion equation
   82.29 : 113.52 = 52.79 : x
2. Step 2: Convert to fraction form
   82.29/113.52 = 52.79/x
3. Step 3: Cross multiply
   82.29x = 113.52 × 52.79
4. Step 4: Simplify right side
   82.29x = 5,992.15
5. Step 5: Solve for x
   x = 5,992.15/82.29
6. Step 6: Final answer
   x = 72.82