If the population of Canada was estimated to be 32,548,260 on January 2010, and the population on Ontario was estimated to be 37 4/7% of Canada’s population, calculate the population of Ontario.

The population of Ontario can be calculated by multiplying the percentage of Ontario's population relative to Canada with the total population of Canada.

Population of Ontario = (37 4/7/100) * 32,548,260

First, let's convert the mixed fraction 37 4/7 to an improper fraction:
37 4/7 = (7*37 + 4)/7 = 259/7

Now, calculate the population of Ontario:
Population of Ontario = (259/7/100) * 32,548,260

Population of Ontario = (259/700) * 32,548,260

Populaton of Ontario ≈ 0.3704 * 32,548,260

Population of Ontario ≈ 12,058,996.91

Therefore, the population of Ontario was estimated to be approximately 12,058,996.91 on January 2010.