CREATE TABLE table_1231892_4 (number_in_series INT, broadcast_order VARCHAR)

What's the series number of the episode with a broadcast order s04 e07?
SELECT MAX(number_in_series) FROM table_1231892_4 WHERE broadcast_order = "S04 E07"
SELECT MAX("number_in_series") FROM "table_1231892_4" WHERE "S04 E07" = "broadcast_order"