Final answer:
Max Weber is the German economist and sociologist who promoted the pyramid-shaped organizational structure, contributing significantly to the field of social and economic thought.
Step-by-step explanation:
The German economist and sociologist who promoted the pyramid-shaped organization structure was Max Weber. Weber's theories on bureaucracy and organizational structure are part of his larger body of work on economic and social theory. In his 1922 book 'The Theory of Social and Economic Organization', Weber described the characteristics of a bureaucratic organization, emphasizing a hierarchical structure, a set of defined rules, and a clear division of labor. This pyramid-shaped organizational structure has been influential in both public administration and private business practices. Weber's contributions to sociology and his analysis of the impacts of industrialization on individuals make him a seminal figure in social and economic thought.