@Bertus : Your Fellowship will need to score a total of 40,000 Tournament Points to achieve the 10th Chest.
If there are 25 people in your Fellowship, this works out at an average of 1,600 points per member, and any score will qualify for all prizes won.
The easiest way to score 1,600 points is to complete the first 10 Provinces six times over.
Hope this helps!