To round 3,697,105.3172679 to the nearest ten-thousands:

1. Identify the ten-thousands place, which is the digit 9 (in 69,7105).
2. Look at the digit to the right (the thousands place), which is 7.
3. Since 7 is 5 or greater, round the ten-thousands place 9 up by 1.

Thus, 3,697,105.3172679 rounded to the nearest ten-thousands is 3,700,000.

Would you like further details or have any questions?

Here are 5 related questions you might find useful:

1. How do you round numbers to the nearest hundred?
2. What is the process for rounding decimals to a specific place value?
3. Can you explain rounding large numbers with multiple decimal places?
4. How does rounding affect calculations in real-world applications?
5. What is the difference between rounding up and rounding down?

Tip: When rounding, always remember that digits 5 or greater round the previous digit up!