You'll need a detailed engine diagram or a repair manual specific to your 1997 Chrysler Cirrus 2.5L V6 to pinpoint the exact location of spark plug #5. A visual inspection with the engine cover removed will be the most reliable method once you have a general idea from the diagram.
Searching online for "1997 Chrysler Cirrus 2.5L V6 spark plug diagram" will yield various images you can use as a reference. Always be cautious when working on your engine; disconnect the battery's negative terminal before starting any work.