Finding the Fourth Proportional to 20,369.98, 28,058.00 and 14,391.27

Step by Step Solution

1. Step 1: Write the proportion equation
   20,369.98 : 28,058.00 = 14,391.27 : x
2. Step 2: Convert to fraction form
   20,369.98/28,058.00 = 14,391.27/x
3. Step 3: Cross multiply
   20,369.98x = 28,058.00 × 14,391.27
4. Step 4: Simplify right side
   20,369.98x = 403,790,181.70
5. Step 5: Solve for x
   x = 403,790,181.70/20,369.98
6. Step 6: Final answer
   x = 19,822.81