Finding the Fourth Proportional to 59.69, 82.40 and 38.99

Step by Step Solution

1. Step 1: Write the proportion equation
   59.69 : 82.40 = 38.99 : x
2. Step 2: Convert to fraction form
   59.69/82.40 = 38.99/x
3. Step 3: Cross multiply
   59.69x = 82.40 × 38.99
4. Step 4: Simplify right side
   59.69x = 3,212.78
5. Step 5: Solve for x
   x = 3,212.78/59.69
6. Step 6: Final answer
   x = 53.82