It means the maximum number of AAL shares you can get is
4.8/394.2 = 1.217656 %
bearing any further distribution from DCR pool to creditors
So if you have 100,000 AAMRQ shares, assuming all outstanding claims are fully resolved with zero distribution to claim owners, you as an AAMRQ shareholder, will get 1,217 shares of AAL
AAL share price as of close of 01 May 2020 : $10.64