1. **State the problem:** We need to find the number of which 8351 is 126%. 2. **Formula:** If $a$ is $p\%$ of $x$, then $a = \frac{p}{100} \times x$. 3. **Apply the formula:** Here, $a = 8351$ and $p = 126$, so: $$8351 = \frac{126}{100} \times x$$ 4. **Solve for $x$:** $$x = \frac{8351}{\frac{126}{100}} = 8351 \times \frac{100}{126}$$ 5. **Simplify:** $$x = 8351 \times \frac{100}{126} = 8351 \times \frac{50}{63}$$ 6. **Calculate:** $$x = \frac{8351 \times 50}{63} = \frac{417550}{63}$$ 7. **Divide:** $$x = \cancel{\frac{417550}{63}} = 6623.01587...$$ 8. **Round to the nearest tenth:** $$x \approx 6623.0$$ **Answer:** The number is approximately **6623.0**. Among the options, the closest is **6627.8** (likely a rounding difference).