Michael Dell is worth $16 billion on his own. In talking about him taking it private, I was assuming he'd lean into it extremely heavily (putting most of his net worth at risk). And obviously he very well might have no desire to do such a thing at nearly 50 years of age.
Even if Michael Dell used $10b of his wealth, financed $10b of it with Dell's cash, and then got $10b in private equity, it would be extremely doable at a $30b take out price (or less given the very bearish sentiment on the stock).
If Michael Dell wanted to, I think he could take the whole thing out himself (leveraging the company cash ultimately as well). He currently owns around 12% of the company ($13.5x billion in wealth outside of Dell stock). In the current market weakness, he could probably gradually consume another 8% to 13% of the stock without hardly moving the price.