Update README.md

Author: SQLicious

README.md

@@ -24,8 +24,11 @@ I hope my solutions inspire your SQL journey.
 
 
 [Challenge 2 - Esports Tournament](https://github.com/SQLicious/Steel-Data-SQL-Python-Challenges/blob/main/Challenge%202%20-%20Esports%20Tournament)
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 [Challenge 3 - Customer Insights](https://github.com/SQLicious/Steel-Data-SQL-Python-Challenges/blob/main/Challenge%203%20-%20Customer%20Insights.md)
 
+[Challenge 4 - Finance Analysis] (https://github.com/SQLicious/Steel-Data-SQL-Python-Challenges/blob/main/Challenge%204%20-%20Finance%20Analysis.md)
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 SQL is a dynamic and versatile language, and there's often more than one way to approach a problem. These solutions reflect my thought process, but don't hesitate to put your unique spin on things!