Finding the Fourth Proportional to 20,018.78, 27,625.92 and 12,061.34

Step by Step Solution

1. Step 1: Write the proportion equation
   20,018.78 : 27,625.92 = 12,061.34 : x
2. Step 2: Convert to fraction form
   20,018.78/27,625.92 = 12,061.34/x
3. Step 3: Cross multiply
   20,018.78x = 27,625.92 × 12,061.34
4. Step 4: Simplify right side
   20,018.78x = 333,205,613.93
5. Step 5: Solve for x
   x = 333,205,613.93/20,018.78
6. Step 6: Final answer
   x = 16,644.65