Students at a tuition centre are standing in a row in order of their marks in first term test. Pallavi has scored the highest marks and is standing in the first position. Her friend Ayushi is standing in the middle of the row. Immediately after Ayushi is Madhav who is immediately before Dhruv. Yashi is standing at the second position and Mansi has scored fewer marks than Dhruv. Vichi has scored the third position. Who is ranked at the 4^th position?