Presumably the variables will represent the amounts to be spent on the different possible assets. If all these have positive prices, the fact there is a fixed budget implies the feasible region must be bounded: if one unit of a particular asset has price $p$ and the total budget is $B$, you can't buy more than $B/p$ units of that asset. But you have told us nothing that would suggest there is only one optimal solution. It's perfectly possible, for example, that asset $x$ and asset $y$ are completely equivalent.
EDIT: Oh, is the question to design a linear programming problem? Well then, you could make up an objective and some constraints, including one that says the total amount spent on property, plants and equipment is at most $10$ million. With any luck, your problem will have a unique optimal solution. If it's not unique, change some coefficient.