Finding the Fourth Proportional to 33,067.68, 45,636.24 and 20,490

Step by Step Solution

1. Step 1: Write the proportion equation
   33,067.68 : 45,636.24 = 20,490 : x
2. Step 2: Convert to fraction form
   33,067.68/45,636.24 = 20,490/x
3. Step 3: Cross multiply
   33,067.68x = 45,636.24 × 20,490
4. Step 4: Simplify right side
   33,067.68x = 935,086,557.60
5. Step 5: Solve for x
   x = 935,086,557.60/33,067.68
6. Step 6: Final answer
   x = 28,277.96