Finding the Fourth Proportional to 82.62, 123.83 and 52.10

Step by Step Solution

1. Step 1: Write the proportion equation
   82.62 : 123.83 = 52.10 : x
2. Step 2: Convert to fraction form
   82.62/123.83 = 52.10/x
3. Step 3: Cross multiply
   82.62x = 123.83 × 52.10
4. Step 4: Simplify right side
   82.62x = 6,451.54
5. Step 5: Solve for x
   x = 6,451.54/82.62
6. Step 6: Final answer
   x = 78.09