Numerical set Z: 1, 2, 3, 4, 5

Transformation process:

1. Increase each number in Z by 4.1: Z = [1 + 4.1, 2 + 4.1, 3 + 4.1, 4 + 4.1, 5 + 4.1] = [5.1, 6.1, 7.1, 8.1, 9.1]
2. Multiply each number in Z by 3: C = [5.1 3, 6.1 3, 7.1 3, 8.1 3, 9.1 * 3] = [15.3, 18.3, 21.3, 24.3, 27.3]

Numerical set C: 15.3, 18.3, 21.3, 24.3, 27.3