Finding the Fourth Proportional to 22,333.72, 33,481.71 and 18,385.21

Step by Step Solution

1. Step 1: Write the proportion equation
   22,333.72 : 33,481.71 = 18,385.21 : x
2. Step 2: Convert to fraction form
   22,333.72/33,481.71 = 18,385.21/x
3. Step 3: Cross multiply
   22,333.72x = 33,481.71 × 18,385.21
4. Step 4: Simplify right side
   22,333.72x = 615,568,269.51
5. Step 5: Solve for x
   x = 615,568,269.51/22,333.72
6. Step 6: Final answer
   x = 27,562.28