CREATE TABLE table_28980706_4 (share__18_49_ VARCHAR, viewers__millions_ VARCHAR)

When there are 9.28 million viewers what is the share (18-49)?
SELECT share__18_49_ FROM table_28980706_4 WHERE viewers__millions_ = "9.28"
SELECT "share__18_49_" FROM "table_28980706_4" WHERE "9.28" = "viewers__millions_"