We have the following:
To organize the number from least to greastest, we must look at the decimals in this case, since they all start with 6
[tex]\begin{gathered} 6.4052\rightarrow4052 \\ 6.4\rightarrow4000 \\ 6.006\rightarrow0060 \\ 6.06\rightarrow0600 \\ \text{now we organize these values from least to greastest} \\ 0060 \\ 0600 \\ 4000 \\ 4052 \end{gathered}[/tex]Therefore the order of the numbers is
[tex]\begin{gathered} 6.006 \\ 6.06 \\ 6.4 \\ 6.4052 \end{gathered}[/tex]