Finding the Fourth Proportional to 22,488.89, 31,037.41 and 13,057.45

Step by Step Solution

1. Step 1: Write the proportion equation
   22,488.89 : 31,037.41 = 13,057.45 : x
2. Step 2: Convert to fraction form
   22,488.89/31,037.41 = 13,057.45/x
3. Step 3: Cross multiply
   22,488.89x = 31,037.41 × 13,057.45
4. Step 4: Simplify right side
   22,488.89x = 405,269,542.52
5. Step 5: Solve for x
   x = 405,269,542.52/22,488.89
6. Step 6: Final answer
   x = 18,020.88