Finding the Fourth Proportional to 22,475.20, 31,013.56 and 13,042.84

Step by Step Solution

1. Step 1: Write the proportion equation
   22,475.20 : 31,013.56 = 13,042.84 : x
2. Step 2: Convert to fraction form
   22,475.20/31,013.56 = 13,042.84/x
3. Step 3: Cross multiply
   22,475.20x = 31,013.56 × 13,042.84
4. Step 4: Simplify right side
   22,475.20x = 404,504,900.91
5. Step 5: Solve for x
   x = 404,504,900.91/22,475.20
6. Step 6: Final answer
   x = 17,997.83