Finding the Fourth Proportional to 23,825.82, 32,879.40 and 13,215.54

Step by Step Solution

1. Step 1: Write the proportion equation
   23,825.82 : 32,879.40 = 13,215.54 : x
2. Step 2: Convert to fraction form
   23,825.82/32,879.40 = 13,215.54/x
3. Step 3: Cross multiply
   23,825.82x = 32,879.40 × 13,215.54
4. Step 4: Simplify right side
   23,825.82x = 434,519,025.88
5. Step 5: Solve for x
   x = 434,519,025.88/23,825.82
6. Step 6: Final answer
   x = 18,237.32