A microchip inspector found five defective chips in a batch containing $700$ chips. At that rate, determine the number of defective chips in a batch of $10000$ chips.

Write a proportion describing this problem in the form $\frac{a}{b} = \frac{x}{d}$ where $x$ represents the number that you are asked to find.

The number defective chips expected in the larger batch is $x =$