"X to the Fourth" refers to a mathematical expression where a variable, represented by X, is raised to the power of four. This means that X is multiplied by itself four times, resulting in the expression X × X × X × X. The outcome is often written as X^4, indicating the exponent of four. In algebra, raising a number to a power is a fundamental operation. For example, if X equals 2, then X to the fourth power would be 2^4, which equals 16. This concept is essential in various fields, including science, engineering, and finance, where exponential growth or scaling is analyzed.