Finding the Fourth Proportional to 20,016.88, 29,996.15 and 13,669.72

Step by Step Solution

1. Step 1: Write the proportion equation
   20,016.88 : 29,996.15 = 13,669.72 : x
2. Step 2: Convert to fraction form
   20,016.88/29,996.15 = 13,669.72/x
3. Step 3: Cross multiply
   20,016.88x = 29,996.15 × 13,669.72
4. Step 4: Simplify right side
   20,016.88x = 410,038,828.24
5. Step 5: Solve for x
   x = 410,038,828.24/20,016.88
6. Step 6: Final answer
   x = 20,484.65