Finding the Fourth Proportional to 33,321.48, 45,977.86 and 20,581.80

Step by Step Solution

1. Step 1: Write the proportion equation
   33,321.48 : 45,977.86 = 20,581.80 : x
2. Step 2: Convert to fraction form
   33,321.48/45,977.86 = 20,581.80/x
3. Step 3: Cross multiply
   33,321.48x = 45,977.86 × 20,581.80
4. Step 4: Simplify right side
   33,321.48x = 946,307,118.95
5. Step 5: Solve for x
   x = 946,307,118.95/33,321.48
6. Step 6: Final answer
   x = 28,399.31