This document provides guidance for Assignment #4 for a course about writing for accounting interns. It explains that Assignment #4 can take the form of either an investigative report or a formal proposal. An investigative report primarily analyzes an issue at a firm through secondary and primary research, while making recommendations. A formal proposal establishes a specific plan to solve an issue at a firm through secondary and primary research to persuade the reader. The document outlines the typical parts and considerations for each type of report.