Comparing the numbers we can arrange the heights as follows:
5692 < 6190 < 8611 < 8848 [1 mark]
So, the increasing order of the mountains based on their heights:
Mount Elbrus < Mount Denali < Mount K2 < Mount Everest [1 Mark]
Tallest mountain among them is Mount Everest and the shortest one is Mount Elbrus. [1 Mark]