Finding the Fourth Proportional to 12,064.70, 18,100.71 and 8,131.74

Step by Step Solution

1. Step 1: Write the proportion equation
   12,064.70 : 18,100.71 = 8,131.74 : x
2. Step 2: Convert to fraction form
   12,064.70/18,100.71 = 8,131.74/x
3. Step 3: Cross multiply
   12,064.70x = 18,100.71 × 8,131.74
4. Step 4: Simplify right side
   12,064.70x = 147,190,267.54
5. Step 5: Solve for x
   x = 147,190,267.54/12,064.70
6. Step 6: Final answer
   x = 12,200.08