Sort a tab delimited file based on column sort command bash

I am trying to sort this file based on the fourth column. I want the file to reordered based on the values of the fourth column.

File:

2   1:103496792:A   0   103496792
3   1:103544434:A   0   103544434
4   1:103548497:A   0   103548497
1   1:10363487:T    0   10363487

I want it sorted like this:

1   1:10363487:T    0   10363487
2   1:103496792:A   0   103496792
3   1:103544434:A   0   103544434
4   1:103548497:A   0   103548497

I tried this command:

sort -t$'\t' -k1,1 -k2,2 -k3,3 -k 4,4 <filename>

But I get illegal variable name error. Can somebody help me with this?