Finding the Fourth Proportional to 22,187.69, 33,111.71 and 19,821.12

Step by Step Solution

1. Step 1: Write the proportion equation
   22,187.69 : 33,111.71 = 19,821.12 : x
2. Step 2: Convert to fraction form
   22,187.69/33,111.71 = 19,821.12/x
3. Step 3: Cross multiply
   22,187.69x = 33,111.71 × 19,821.12
4. Step 4: Simplify right side
   22,187.69x = 656,311,177.32
5. Step 5: Solve for x
   x = 656,311,177.32/22,187.69
6. Step 6: Final answer
   x = 29,579.97