Answer:
BAC4₁₆ = 47812₁₀
Step-by-step explanation:
To convert from hexadecimal base system to decimal base system use this formula:

, where position of the x₁ is the rightmost digit of the number.
and:
- A = 10.
- B = 11.
- C = 12.
- D = 13.
- E = 14.
- F = 15.
BAC4 = 11*16³+10*16²+C*16¹+4*16⁰ = 45056 + 2560 + 192 + 4 = 47812