No problem, let's work through this together. We're starting with 5221 and 4238 and adding them all up.

Step 1: We'll start by adding the digits 1 & 8 in column 1 and get 9.

Step 2: We'll start by adding the digits 2 & 3 in column 2 and get 5.

Step 3: We'll start by adding the digits 2 & 2 in column 3 and get 4.

Step 4: We'll start by adding the digits 5 & 4 in column 4 and get 9.

So, 5221 + 4238 = 9459.

