Finding the Fourth Proportional to 86.94, 130.42 and 38.82

Step by Step Solution

1. Step 1: Write the proportion equation
   86.94 : 130.42 = 38.82 : x
2. Step 2: Convert to fraction form
   86.94/130.42 = 38.82/x
3. Step 3: Cross multiply
   86.94x = 130.42 × 38.82
4. Step 4: Simplify right side
   86.94x = 5,062.90
5. Step 5: Solve for x
   x = 5,062.90/86.94
6. Step 6: Final answer
   x = 58.23