Finding the Fourth Proportional to 22,243, 30,689.30 and 13,286.52

Step by Step Solution

1. Step 1: Write the proportion equation
   22,243 : 30,689.30 = 13,286.52 : x
2. Step 2: Convert to fraction form
   22,243/30,689.30 = 13,286.52/x
3. Step 3: Cross multiply
   22,243x = 30,689.30 × 13,286.52
4. Step 4: Simplify right side
   22,243x = 407,753,998.24
5. Step 5: Solve for x
   x = 407,753,998.24/22,243
6. Step 6: Final answer
   x = 18,331.79