Finding the Fourth Proportional to 35.91, 53.55 and 34.56

Step by Step Solution

1. Step 1: Write the proportion equation
   35.91 : 53.55 = 34.56 : x
2. Step 2: Convert to fraction form
   35.91/53.55 = 34.56/x
3. Step 3: Cross multiply
   35.91x = 53.55 × 34.56
4. Step 4: Simplify right side
   35.91x = 1,850.69
5. Step 5: Solve for x
   x = 1,850.69/35.91
6. Step 6: Final answer
   x = 51.54