The double slit is replaced by a single slit of width w = 0.036 mm and is illuminated with an intense light source of wavelength 528 nm, to produce a diffraction pattern on the screen. The screen is moved closer, now a distance of L = 0.469 m from the slit. Discover the distance, on the screen, of the 4th dark fringe from the central bright maximum of the pattern. Do not use the small-angle approximation.