CREATE TABLE table_12540 ("Week" FLOAT, "Date" TEXT, "Opponent" TEXT, "Result" TEXT, "Attendance" TEXT)

Which Week has a Date of october 4, 1992?
SELECT MAX("Week") FROM table_12540 WHERE "Date" = 'october 4, 1992'
SELECT MAX("Week") FROM "table_12540" WHERE "Date" = 'october 4, 1992'