Answer:
7414 people
Explanation:
Assuming that the population does increase by 20% for every four years since the last data collection of the population, the population can be modeled by using

T = Total Population (Unknown)
P = Initial Population
R = Rate of Increase (20% every four years)
t = Time interval (every four year)
Thus, T = 4700(1 + 0.2)^2.5 = 7413.9725 =~ 7414 people.
Note: The 2.5 is the number of four years that occur since 1995. 2005-1995 = 10 years apart.
Since you have 10 years apart and know that the population increases by 20% every four years, 10/4 = 2.5 times.
Hope this helps!