Finding the Fourth Proportional to 22,477.28, 31,020.34 and 13,047.26

Step by Step Solution

1. Step 1: Write the proportion equation
   22,477.28 : 31,020.34 = 13,047.26 : x
2. Step 2: Convert to fraction form
   22,477.28/31,020.34 = 13,047.26/x
3. Step 3: Cross multiply
   22,477.28x = 31,020.34 × 13,047.26
4. Step 4: Simplify right side
   22,477.28x = 404,730,441.27
5. Step 5: Solve for x
   x = 404,730,441.27/22,477.28
6. Step 6: Final answer
   x = 18,006.20