Finding the Fourth Proportional to 8,131.77, 12,199.38 and 3,134.27

Step by Step Solution

1. Step 1: Write the proportion equation
   8,131.77 : 12,199.38 = 3,134.27 : x
2. Step 2: Convert to fraction form
   8,131.77/12,199.38 = 3,134.27/x
3. Step 3: Cross multiply
   8,131.77x = 12,199.38 × 3,134.27
4. Step 4: Simplify right side
   8,131.77x = 38,236,169.50
5. Step 5: Solve for x
   x = 38,236,169.50/8,131.77
6. Step 6: Final answer
   x = 4,702.07