Victoria, Joelle, Marion and Dana jointly contributed to the cost of a present for their sister. Victoria's contribution is ⁹₁₀ of the total contribution made by the four girls. The ratio of Dana's contribution to the total of Joelle's and Marion's contribution is 4 : 3. What is the total contribution by the four girls if Joelle's contribution is ²₅ of Marion's contribution and the total amount contributed by Victoria and Dana is $4221?

Victoria	Joelle	Marion	Dana	Total
9x49	1x49			10x49
	3x7		4x7
	2x3	5x3
441 u	6 u	15 u	28 u	490 u

Working backwards.

Total amount that Joelle and Marion had is the combined repeated identity.
LCM of 3 and 7 = 21

Total amount that Joelle, Marion and Dana had is the next combined repeated identity.
LCM of 1 and 49 = 49 

Total amount contributed by Victoria and Dana
= 441 u + 28 u
= 469 u

469 u = 4221

3 u = 4221 ÷ 469 = $9

Total contribution by the four girls
= 490 u
= 490 x 9
= $4410

Answer(s): $4410