Finding the Fourth Proportional to 22,321.12, 30,802.14 and 12,249.31

Step by Step Solution

1. Step 1: Write the proportion equation
   22,321.12 : 30,802.14 = 12,249.31 : x
2. Step 2: Convert to fraction form
   22,321.12/30,802.14 = 12,249.31/x
3. Step 3: Cross multiply
   22,321.12x = 30,802.14 × 12,249.31
4. Step 4: Simplify right side
   22,321.12x = 377,304,961.52
5. Step 5: Solve for x
   x = 377,304,961.52/22,321.12
6. Step 6: Final answer
   x = 16,903.50