Finding the Fourth Proportional to 8,191.79, 12,287.71 and 2,492.81

Step by Step Solution

1. Step 1: Write the proportion equation
   8,191.79 : 12,287.71 = 2,492.81 : x
2. Step 2: Convert to fraction form
   8,191.79/12,287.71 = 2,492.81/x
3. Step 3: Cross multiply
   8,191.79x = 12,287.71 × 2,492.81
4. Step 4: Simplify right side
   8,191.79x = 30,630,872.72
5. Step 5: Solve for x
   x = 30,630,872.72/8,191.79
6. Step 6: Final answer
   x = 3,739.22