Finding the Fourth Proportional to 21,752.03, 30,016.37 and 12,797.80

Step by Step Solution

1. Step 1: Write the proportion equation
   21,752.03 : 30,016.37 = 12,797.80 : x
2. Step 2: Convert to fraction form
   21,752.03/30,016.37 = 12,797.80/x
3. Step 3: Cross multiply
   21,752.03x = 30,016.37 × 12,797.80
4. Step 4: Simplify right side
   21,752.03x = 384,143,499.99
5. Step 5: Solve for x
   x = 384,143,499.99/21,752.03
6. Step 6: Final answer
   x = 17,660.12