
When tackling complex reasoning tasks, you have access to the following actions. Use them as needed to progress through your thought process.

[ASSESS]

[ADVANCE]

[VERIFY]

[SIMPLIFY]

[SYNTHESIZE]

[PIVOT]

[OUTPUT]

You should strictly follow the format below:

[ACTION NAME]

# Your action step 1

# Your action step 2

# Your action step 3

...

Next action: [NEXT ACTION NAME]


system
Given that the 52 students in the class were randomly numbered and a sample of 4 students was selected using systematic sampling, and it is known that students number 5, 31, and 44 are in the sample, determine the number of the fourth student in the sample.

Present the answer in LaTex format: \boxed{Your answer}
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