Finding the Fourth Proportional to 8,131.96, 12,188.49 and 5,357.98

Step by Step Solution

1. Step 1: Write the proportion equation
   8,131.96 : 12,188.49 = 5,357.98 : x
2. Step 2: Convert to fraction form
   8,131.96/12,188.49 = 5,357.98/x
3. Step 3: Cross multiply
   8,131.96x = 12,188.49 × 5,357.98
4. Step 4: Simplify right side
   8,131.96x = 65,305,685.65
5. Step 5: Solve for x
   x = 65,305,685.65/8,131.96
6. Step 6: Final answer
   x = 8,030.74