Based on the information given the largest fraction of the firm the company can offer investors is 1/3.
First step is to determine the total amount
Total amount=Amount Raised+ Pre-Money Valuation
Total amount=$4 million+ $10 million
Total amount=$14 million
Second step is to determine the largest fraction
Largest fraction=$7 million /($7 million+ $14 million)
Largest fraction=$7 million/$21 million
Largest fraction=1/3
Inconclusion the largest fraction of the firm the company can offer investors is 1/3.
Learn more about largest fraction here:https://brainly.com/question/14086382