Finding the Fourth Proportional to 16,665.42, 25,008.57 and 8,879.34

Step by Step Solution

1. Step 1: Write the proportion equation
   16,665.42 : 25,008.57 = 8,879.34 : x
2. Step 2: Convert to fraction form
   16,665.42/25,008.57 = 8,879.34/x
3. Step 3: Cross multiply
   16,665.42x = 25,008.57 × 8,879.34
4. Step 4: Simplify right side
   16,665.42x = 222,059,595.94
5. Step 5: Solve for x
   x = 222,059,595.94/16,665.42
6. Step 6: Final answer
   x = 13,324.57