Several CAD programs or even dedicated CAD converters support both the DXF and X_T format from Parasolid, so it should be no surprise that you can converted the first to the other. Except for the 3D modeling / CAD software that are capable of dxf to x_t conversion, you can also find dedicated converters for this job.
Open DXF file Open X_T fileA set of 3D modeling tools
A CAD/CAM software used to create 3D models
A suite of CAD applications