Finding the Fourth Proportional to 22,844.79, 31,529.71 and 13,290.22

Step by Step Solution

1. Step 1: Write the proportion equation
   22,844.79 : 31,529.71 = 13,290.22 : x
2. Step 2: Convert to fraction form
   22,844.79/31,529.71 = 13,290.22/x
3. Step 3: Cross multiply
   22,844.79x = 31,529.71 × 13,290.22
4. Step 4: Simplify right side
   22,844.79x = 419,036,782.44
5. Step 5: Solve for x
   x = 419,036,782.44/22,844.79
6. Step 6: Final answer
   x = 18,342.77