Finding the Fourth Proportional to 59.91, 82.69 and 39.18

Step by Step Solution

1. Step 1: Write the proportion equation
   59.91 : 82.69 = 39.18 : x
2. Step 2: Convert to fraction form
   59.91/82.69 = 39.18/x
3. Step 3: Cross multiply
   59.91x = 82.69 × 39.18
4. Step 4: Simplify right side
   59.91x = 3,240.01
5. Step 5: Solve for x
   x = 3,240.01/59.91
6. Step 6: Final answer
   x = 54.08