Finding the Fourth Proportional to 55.41, 82.79 and 38.15

Step by Step Solution

1. Step 1: Write the proportion equation
   55.41 : 82.79 = 38.15 : x
2. Step 2: Convert to fraction form
   55.41/82.79 = 38.15/x
3. Step 3: Cross multiply
   55.41x = 82.79 × 38.15
4. Step 4: Simplify right side
   55.41x = 3,158.02
5. Step 5: Solve for x
   x = 3,158.02/55.41
6. Step 6: Final answer
   x = 56.99