it could happen, because in my opinion London hard fork greatly affects the increase in the current price of Ethereum and of course the price of Ethereum will continue to increase, so it is possible that the price of Ethereum can reach $5k, because currently the market conditions are also good (recovering), so it could also affect for the price of Ethereum will continue to increase and reach $5k in the next few days.
For the next few days, it looks like it will be a little difficult for Ethereum to reach $5K, but for $4K I think it's still very logical to achieve in the near future because now the price is already over $3K.