Finding the Fourth Proportional to 21,185.43, 31,786.52 and 8,041.29

Step by Step Solution

1. Step 1: Write the proportion equation
   21,185.43 : 31,786.52 = 8,041.29 : x
2. Step 2: Convert to fraction form
   21,185.43/31,786.52 = 8,041.29/x
3. Step 3: Cross multiply
   21,185.43x = 31,786.52 × 8,041.29
4. Step 4: Simplify right side
   21,185.43x = 255,604,585.20
5. Step 5: Solve for x
   x = 255,604,585.20/21,185.43
6. Step 6: Final answer
   x = 12,065.11