Finding the Fourth Proportional to 22,491.42, 31,040.90 and 13,059.98

Step by Step Solution

1. Step 1: Write the proportion equation
   22,491.42 : 31,040.90 = 13,059.98 : x
2. Step 2: Convert to fraction form
   22,491.42/31,040.90 = 13,059.98/x
3. Step 3: Cross multiply
   22,491.42x = 31,040.90 × 13,059.98
4. Step 4: Simplify right side
   22,491.42x = 405,393,726.12
5. Step 5: Solve for x
   x = 405,393,726.12/22,491.42
6. Step 6: Final answer
   x = 18,024.37