Start from the profile with the higher number (16179). Scroll to the bottom of the page, under Pending Merges, click on the text link [initiate a merge]. On the page that opens fill in the lower ID in the second text entry box. So you would enter: Carter-15127
Most of the time you would then want to click Compare and look at the details side by side, but in this case it's fine to just click Merge.