Can you detail Ratanji's pilgrimage to Pandharpur and his experience there?

The source material does not describe a pilgrimage to Pandharpur. According to chapter 14, the journey Ratanji undertook was to Shirdi. Ratanji, a prosperous but unhappy Parsi merchant, was advised by Das Ganu to seek the blessings of Sai Baba to resolve his sorrow over not having a son. Accepting this advice, Ratanji made a resolution and traveled to Shirdi. Chapter 14 recounts his arrival, where he went to the Masjid for darshan, prostrated at Sai's feet, and offered a flower garland. The entire focus of his journey described in the text is his visit to Sai Baba in Shirdi.