A sample internal-audit workbook demonstrating how I reconcile fuel provider statements against internal system records across a 12-vehicle fleet. Automated formulas flag consumption variances beyond a 5% threshold and cross-check disbursement vouchers for missing documentation, compiling all findings into an actionable audit report. This workflow reflects my day-to-day experience as an internal auditor reviewing fleet expenses. (Sample/training data - similar to the data I work with in my current role)