Cook County jurors awarded a man $15.2 million Friday more than a decade after he sustained a lower back injury while removing a desk from a truck on a job site.Plaintiff Kenneth M. Smith, 47, filed a negligence lawsuit in June 2008 against XSport Fitness Inc. and its subsidiaries; third-party contractors; and project manager Retail Project Managers Inc., alleging that RPM and its contractors did not provide “adequate equipment” or “proper staffing” to help in unloading a 300-pound desk.The $15.2 …