I would be grateful
Yo estaría agradecido por su aprobación a esta demanda.
I would be grateful for your approval of this request.
Te estaría agradecido si pudieras esperar hasta mañana.
I would be grateful if you could wait until tomorrow.
Pensé que Tom estaría agradecido.
I thought Tom would be grateful.
Si me pudieras prestar dinero, estaría agradecido.
If you could lend me some money, I’d be grateful.
I would be grateful.