To solve the equation \( 82.78(p + 11.892) = 72.8464 \) for \( p \), follow these steps:
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Divide both sides by 82.78: \[ p + 11.892 = \frac{72.8464}{82.78} \]
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Calculate the right side: \[ \frac{72.8464}{82.78} \approx 0.880 \]
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Now, isolate \( p \): \[ p = 0.880 - 11.892 \]
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Perform the subtraction: \[ p \approx 0.880 - 11.892 = -11.012 \]
Thus, the solution for \( p \) is: \[ p \approx -11.012 \]
Therefore, the exact answer is: \[ p = -11.012 \]