وَوَجَدَكَ عَآئِلًا فَأَغْنَىٰ
Sentence structure
وَوَجَدَكَ has understood subject, كَ first object and عَآئِلًا second object. فَأَغْنَىٰ is a coordinated Form IV result.
Ayah summary
Allah found you in need and made you self-sufficient.
وَوَجَدَكَ — And He found you
Grammar: وَ coordinates; the perfect has understood subject and كَ as first object.
عَآئِلًۭا — in need
Grammar: An indefinite masculine accusative second object.
فَأَغْنَىٰ — then enriched
Grammar: فَ marks result; أَغْنَىٰ is Form IV perfect with understood subject.