FRANKFURT, Germany—Germany Siemens AG, global maker of big-ticket machines and industrial equipment and software, saw net profit rise 20 percent to 1.8 billion euros in the last three months of 2021 as the rebounding global economy increased orders for its goods, including a 1-billion euro order for high speed trains in Germany. The company on Thursday confirmed its outlook for increased earnings going forward and proposed an increased dividend of 4 euros per share for its last fiscal year, up from 3.50 euros in fiscal 2020. CEO Roland Busch said the company had “a very successful start” in the October-December quarter, the first of its fiscal year. Siemens experienced what Busch called an “unprecedented boom” in new orders, which rose 52 percent from a year earlier. It is a key figure for the company because orders for large-scale projects that may take months or years to complete underpin future earnings …