''Finally" is typically used to create a time line in a paragraph or sentence; in other words, it is used as a "when."
Finally is used as the last or final point linking what follows with the previous statements. Finally doesn't really create a time line it ends one.
I had finally outrun .....
I finally, finished my homework.
My flowers finally bloomed today.
Living well is the best revenge.
She wrote her daily schedule on a slate hung by the door.
I finally found it! Eureka!!
The men were arguing but finally they came into concilatory.
By use of the word in a sentence.
Example sentence - He chuckled to himself when her children finally moved away from home.
He was just ecstatic about finally getting a job offer.
After much determination, she finally solved the problem.
My science project was finally complete! Hope this helps