it is unlikely to get rejected, esp after 4 interviews. Most schools have acceptance rates at or above 60%, therefore to interview at 4 schools with a 60% chance per school, will yield a 97% chance to acceptance to at least 1 school. I think if you don't get accepted to 1 out of 4 schools, you are def doing something wrong and maybe you need to learn how to interview better. (even if you interview at 4 schools with a 40% rate of acceptance, you still yield a 87% chance of at least 1 acceptance.)
so dont worry baker, the % are on your side.