Finding the Fourth Proportional to 12,186.14, 18,279.86 and 3,866.82

Step by Step Solution

1. Step 1: Write the proportion equation
   12,186.14 : 18,279.86 = 3,866.82 : x
2. Step 2: Convert to fraction form
   12,186.14/18,279.86 = 3,866.82/x
3. Step 3: Cross multiply
   12,186.14x = 18,279.86 × 3,866.82
4. Step 4: Simplify right side
   12,186.14x = 70,684,928.25
5. Step 5: Solve for x
   x = 70,684,928.25/12,186.14
6. Step 6: Final answer
   x = 5,800.44