Finding the Fourth Proportional to 42.52, 63.50 and 38.92

Step by Step Solution

1. Step 1: Write the proportion equation
   42.52 : 63.50 = 38.92 : x
2. Step 2: Convert to fraction form
   42.52/63.50 = 38.92/x
3. Step 3: Cross multiply
   42.52x = 63.50 × 38.92
4. Step 4: Simplify right side
   42.52x = 2,471.42
5. Step 5: Solve for x
   x = 2,471.42/42.52
6. Step 6: Final answer
   x = 58.12