Finding the Fourth Proportional to 12,012.60, 18,016.59 and 3,245.31

Step by Step Solution

1. Step 1: Write the proportion equation
   12,012.60 : 18,016.59 = 3,245.31 : x
2. Step 2: Convert to fraction form
   12,012.60/18,016.59 = 3,245.31/x
3. Step 3: Cross multiply
   12,012.60x = 18,016.59 × 3,245.31
4. Step 4: Simplify right side
   12,012.60x = 58,469,419.69
5. Step 5: Solve for x
   x = 58,469,419.69/12,012.60
6. Step 6: Final answer
   x = 4,867.34