Finding the Fourth Proportional to 22,491, 31,040.31 and 13,059.56

Step by Step Solution

1. Step 1: Write the proportion equation
   22,491 : 31,040.31 = 13,059.56 : x
2. Step 2: Convert to fraction form
   22,491/31,040.31 = 13,059.56/x
3. Step 3: Cross multiply
   22,491x = 31,040.31 × 13,059.56
4. Step 4: Simplify right side
   22,491x = 405,372,917.44
5. Step 5: Solve for x
   x = 405,372,917.44/22,491
6. Step 6: Final answer
   x = 18,023.78