This is the 4605th most frequent Turkish word.
beraberindekiler
"Those who are with him/her" or "his/her companions."
The word 'beraberindekiler' here refers to the accompanying people who are with Ali.
Ali, beraberindekilerle birlikte toplantıya geç kaldı.
Ali was late to the meeting with those accompanying him.
In this sentence, 'beraberindekiler' denotes the people who were with the subject during travel.
Beraberindekiler, seyahatte ona çok yardımcı oldu.
Those accompanying him were very helpful to him during the trip.
Here, 'beraberindekiler' is used to describe the people accompanying the subject, who are spoken about.