Finding the Fourth Proportional to 22,805.30, 31,462.37 and 13,243.55

Step by Step Solution

1. Step 1: Write the proportion equation
   22,805.30 : 31,462.37 = 13,243.55 : x
2. Step 2: Convert to fraction form
   22,805.30/31,462.37 = 13,243.55/x
3. Step 3: Cross multiply
   22,805.30x = 31,462.37 × 13,243.55
4. Step 4: Simplify right side
   22,805.30x = 416,673,404.00
5. Step 5: Solve for x
   x = 416,673,404.00/22,805.30
6. Step 6: Final answer
   x = 18,270.90