Finding the Fourth Proportional to 8,131.32, 12,179.97 and 5,194.71

Step by Step Solution

1. Step 1: Write the proportion equation
   8,131.32 : 12,179.97 = 5,194.71 : x
2. Step 2: Convert to fraction form
   8,131.32/12,179.97 = 5,194.71/x
3. Step 3: Cross multiply
   8,131.32x = 12,179.97 × 5,194.71
4. Step 4: Simplify right side
   8,131.32x = 63,271,411.96
5. Step 5: Solve for x
   x = 63,271,411.96/8,131.32
6. Step 6: Final answer
   x = 7,781.20