Explanation: The Fourth Estate is a societal or political institution whose influence is not officially recognized and is most commonly referred to the news media, especially print journalism or “the press”.

Conservative Anglo-Irish MP Edmund Burke coined the phrase as a way of mocking the gentlemen of the press. Edmund Burke first dubbed the press as the ‘Fourth Estate’.

Source: https://theconversation.com/right-to-know-the-nation-the-people-and-the-fourth-estate-21253#:~:text=The%20media%20as%20the%20Fourth%20Estate&text=Conservative%20Anglo%2DIrish%20MP%20Edmund,as%20the%20’Fourth%20Estate‘.