Finding the Fourth Proportional to 22,249.72, 33,364.86 and 8,389

Step by Step Solution

1. Step 1: Write the proportion equation
   22,249.72 : 33,364.86 = 8,389 : x
2. Step 2: Convert to fraction form
   22,249.72/33,364.86 = 8,389/x
3. Step 3: Cross multiply
   22,249.72x = 33,364.86 × 8,389
4. Step 4: Simplify right side
   22,249.72x = 279,897,810.54
5. Step 5: Solve for x
   x = 279,897,810.54/22,249.72
6. Step 6: Final answer
   x = 12,579.84