Finding the Fourth Proportional to 21,019.98, 31,529.94 and 14,426.16

Step by Step Solution

1. Step 1: Write the proportion equation
   21,019.98 : 31,529.94 = 14,426.16 : x
2. Step 2: Convert to fraction form
   21,019.98/31,529.94 = 14,426.16/x
3. Step 3: Cross multiply
   21,019.98x = 31,529.94 × 14,426.16
4. Step 4: Simplify right side
   21,019.98x = 454,855,959.23
5. Step 5: Solve for x
   x = 454,855,959.23/21,019.98
6. Step 6: Final answer
   x = 21,639.22