Trigger fire wrong data to table problem

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SQL

I create a trigger on table after insert and insert the data from current table to new table using temp INSERTED table. Data is inserted but some column data is not correct. for example i have distance column in both old and new table and suppose in one row of old table i inserted new record with distance 34.45 but after trigger is fired the new table's distance column have 37.21.

i don't understand what is the problem and how to get rid of it.

Please help me.

[ADDED (from comments)]

CREATE TRIGGER [dbo].[Shortest_Exit_Path]
ON [dbo].[Exit_Path]
AFTER INSERT
AS
IF (@@RowCount > 0)
BEGIN

    INSERT into Shortest_Exit_Path([ProjectId]
           ,[ExitPath]
           ,[PhysicalExitPath]
           ,[ExitPathCoordinates]
           ,[Distance]
          )
        SELECT [ProjectId]

           ,[ExitPath]
           ,[PhysicalExitPath]
           ,[ExitPathCoordinates]
           ,[Distance]
            FROM Inserted


END