Find the correct alternative matching the given analogical relationship:
$$18120:\text{RAT}::18914719:?$$

Let's convert the letters of the word 'RAT' into their corresponding numerical positions in the alphabet ($\text{A}=1,\text{B}=2,\dots ,\text{Z}=26$):
* $\text{R}=18$
* $\text{A}=1$
* $\text{T}=20$

Concatenating these values yields: **$18120$ . This matches the left side of the first pair exactly.

Now, let's reverse this logic to decode the number $18914719$ **:

* $18\to \text{R}$
* $9\to \text{I}$
* $14\to \text{N}$
* $7\to \text{G}$
* $19\to \text{S}$

Combining these decoded letters forms the word 'RINGS'.