Finding the Fourth Proportional to 82.10, 123.16 and 33.98

Step by Step Solution

1. Step 1: Write the proportion equation
   82.10 : 123.16 = 33.98 : x
2. Step 2: Convert to fraction form
   82.10/123.16 = 33.98/x
3. Step 3: Cross multiply
   82.10x = 123.16 × 33.98
4. Step 4: Simplify right side
   82.10x = 4,184.98
5. Step 5: Solve for x
   x = 4,184.98/82.10
6. Step 6: Final answer
   x = 50.97