Finding the Fourth Proportional to 82.82, 123.53 and 82.01

Step by Step Solution

1. Step 1: Write the proportion equation
   82.82 : 123.53 = 82.01 : x
2. Step 2: Convert to fraction form
   82.82/123.53 = 82.01/x
3. Step 3: Cross multiply
   82.82x = 123.53 × 82.01
4. Step 4: Simplify right side
   82.82x = 10,130.59
5. Step 5: Solve for x
   x = 10,130.59/82.82
6. Step 6: Final answer
   x = 122.32