Translate the following English sentence to French:
"Fourthly, we must bear in mind that sources of fossil fuels have been accompanied recently by price fluctuations ranging from 10 to 30 dollars a barrel."
Quatrièmement, nous devrions clairement percevoir que, récemment, les sources d'énergie fossile ont engendré des fluctuations de prix qui ont fait passer le baril de 10 à 30 dollars.