Finding the Fourth Proportional to 33,118.20, 45,698.04 and 19,689.21

Step by Step Solution

1. Step 1: Write the proportion equation
   33,118.20 : 45,698.04 = 19,689.21 : x
2. Step 2: Convert to fraction form
   33,118.20/45,698.04 = 19,689.21/x
3. Step 3: Cross multiply
   33,118.20x = 45,698.04 × 19,689.21
4. Step 4: Simplify right side
   33,118.20x = 899,758,306.15
5. Step 5: Solve for x
   x = 899,758,306.15/33,118.20
6. Step 6: Final answer
   x = 27,168.09