Principal Partners is considering the purchase of a new piece of equipment. The equipment costs $39,566. The cost savings from the equipment will be Year 1: $12,019 Year 2: $19,402 Year 3: $13,304 Year 4: $ 8,048 Year 5: $ 5,284 Assume the savings are equal throughout the years. What is the payback period? Please round your answer to 2 decimal places (i.e. if your answer is 4.43498, round it to 4.43)