Finding the Fourth Proportional to 16.02, 24.18 and 15.86

Step by Step Solution

1. Step 1: Write the proportion equation
   16.02 : 24.18 = 15.86 : x
2. Step 2: Convert to fraction form
   16.02/24.18 = 15.86/x
3. Step 3: Cross multiply
   16.02x = 24.18 × 15.86
4. Step 4: Simplify right side
   16.02x = 383.50
5. Step 5: Solve for x
   x = 383.50/16.02
6. Step 6: Final answer
   x = 23.94