Finding the Fourth Proportional to 32.01, 47.72 and 28.56

Step by Step Solution

1. Step 1: Write the proportion equation
   32.01 : 47.72 = 28.56 : x
2. Step 2: Convert to fraction form
   32.01/47.72 = 28.56/x
3. Step 3: Cross multiply
   32.01x = 47.72 × 28.56
4. Step 4: Simplify right side
   32.01x = 1,362.88
5. Step 5: Solve for x
   x = 1,362.88/32.01
6. Step 6: Final answer
   x = 42.58