Finding the Fourth Proportional to 19.25, 28.83 and 15.86

Step by Step Solution

1. Step 1: Write the proportion equation
   19.25 : 28.83 = 15.86 : x
2. Step 2: Convert to fraction form
   19.25/28.83 = 15.86/x
3. Step 3: Cross multiply
   19.25x = 28.83 × 15.86
4. Step 4: Simplify right side
   19.25x = 457.10
5. Step 5: Solve for x
   x = 457.10/19.25
6. Step 6: Final answer
   x = 23.75