Finding the Fourth Proportional to 21,016.63, 29,014.82 and 13,952.71

Step by Step Solution

1. Step 1: Write the proportion equation
   21,016.63 : 29,014.82 = 13,952.71 : x
2. Step 2: Convert to fraction form
   21,016.63/29,014.82 = 13,952.71/x
3. Step 3: Cross multiply
   21,016.63x = 29,014.82 × 13,952.71
4. Step 4: Simplify right side
   21,016.63x = 404,835,369.16
5. Step 5: Solve for x
   x = 404,835,369.16/21,016.63
6. Step 6: Final answer
   x = 19,262.62