Finding the Fourth Proportional to 21,143.30, 31,671.89 and 10,016.26

Step by Step Solution

1. Step 1: Write the proportion equation
   21,143.30 : 31,671.89 = 10,016.26 : x
2. Step 2: Convert to fraction form
   21,143.30/31,671.89 = 10,016.26/x
3. Step 3: Cross multiply
   21,143.30x = 31,671.89 × 10,016.26
4. Step 4: Simplify right side
   21,143.30x = 317,233,884.93
5. Step 5: Solve for x
   x = 317,233,884.93/21,143.30
6. Step 6: Final answer
   x = 15,003.99