CREATE TABLE table_22644589_4 (event VARCHAR, compulsory_dance__cd_ VARCHAR)

In what event was the compulsory dance score 28.12?
SELECT event FROM table_22644589_4 WHERE compulsory_dance__cd_ = "28.12"
SELECT "event" FROM "table_22644589_4" WHERE "28.12" = "compulsory_dance__cd_"