Finding the Fourth Proportional to 14,443.16, 21,701.28 and 13,859.96

Step by Step Solution

1. Step 1: Write the proportion equation
   14,443.16 : 21,701.28 = 13,859.96 : x
2. Step 2: Convert to fraction form
   14,443.16/21,701.28 = 13,859.96/x
3. Step 3: Cross multiply
   14,443.16x = 21,701.28 × 13,859.96
4. Step 4: Simplify right side
   14,443.16x = 300,778,872.75
5. Step 5: Solve for x
   x = 300,778,872.75/14,443.16
6. Step 6: Final answer
   x = 20,825.00