Finding the Fourth Proportional to 12,185.98, 18,281.24 and 3,863.76

Step by Step Solution

1. Step 1: Write the proportion equation
   12,185.98 : 18,281.24 = 3,863.76 : x
2. Step 2: Convert to fraction form
   12,185.98/18,281.24 = 3,863.76/x
3. Step 3: Cross multiply
   12,185.98x = 18,281.24 × 3,863.76
4. Step 4: Simplify right side
   12,185.98x = 70,634,250.48
5. Step 5: Solve for x
   x = 70,634,250.48/12,185.98
6. Step 6: Final answer
   x = 5,796.35