Finding the Fourth Proportional to 21,782.38, 30,055.04 and 12,826.62

Step by Step Solution

1. Step 1: Write the proportion equation
   21,782.38 : 30,055.04 = 12,826.62 : x
2. Step 2: Convert to fraction form
   21,782.38/30,055.04 = 12,826.62/x
3. Step 3: Cross multiply
   21,782.38x = 30,055.04 × 12,826.62
4. Step 4: Simplify right side
   21,782.38x = 385,504,577.16
5. Step 5: Solve for x
   x = 385,504,577.16/21,782.38
6. Step 6: Final answer
   x = 17,698.00