Finding the Fourth Proportional to 22,816.83, 31,488.45 and 12,745.49

Step by Step Solution

1. Step 1: Write the proportion equation
   22,816.83 : 31,488.45 = 12,745.49 : x
2. Step 2: Convert to fraction form
   22,816.83/31,488.45 = 12,745.49/x
3. Step 3: Cross multiply
   22,816.83x = 31,488.45 × 12,745.49
4. Step 4: Simplify right side
   22,816.83x = 401,335,724.59
5. Step 5: Solve for x
   x = 401,335,724.59/22,816.83
6. Step 6: Final answer
   x = 17,589.46