Finding the Fourth Proportional to 22,162.71, 30,588.51 and 13,210.80

Step by Step Solution

1. Step 1: Write the proportion equation
   22,162.71 : 30,588.51 = 13,210.80 : x
2. Step 2: Convert to fraction form
   22,162.71/30,588.51 = 13,210.80/x
3. Step 3: Cross multiply
   22,162.71x = 30,588.51 × 13,210.80
4. Step 4: Simplify right side
   22,162.71x = 404,098,687.91
5. Step 5: Solve for x
   x = 404,098,687.91/22,162.71
6. Step 6: Final answer
   x = 18,233.27