Finding the Fourth Proportional to 8,191.93, 12,288.69 and 3,260.42

Step by Step Solution

1. Step 1: Write the proportion equation
   8,191.93 : 12,288.69 = 3,260.42 : x
2. Step 2: Convert to fraction form
   8,191.93/12,288.69 = 3,260.42/x
3. Step 3: Cross multiply
   8,191.93x = 12,288.69 × 3,260.42
4. Step 4: Simplify right side
   8,191.93x = 40,066,290.65
5. Step 5: Solve for x
   x = 40,066,290.65/8,191.93
6. Step 6: Final answer
   x = 4,890.95