1. The problem shows a pyramid-like structure with three levels: a bottom level with one rectangle labeled 3.26, a middle level with two rectangles labeled 8.4 on the left and 7.16 on the right, and an empty top level rectangle. 2. Usually, in such pyramids, each upper block is the sum of the two blocks immediately below it. 3. To find the top rectangle value, add the two middle-level numbers: $$8.4 + 7.16 = 15.56$$ 4. This means the top rectangle should have the value 15.56. 5. To verify, the bottom middle number 3.26 is given, and the sum 8.4 and 7.16 equals 15.56 as expected. Final answer: The top block value is $15.56$.