Finding the Fourth Proportional to 12,007.98, 18,011.57 and 4,216.59

Step by Step Solution

1. Step 1: Write the proportion equation
   12,007.98 : 18,011.57 = 4,216.59 : x
2. Step 2: Convert to fraction form
   12,007.98/18,011.57 = 4,216.59/x
3. Step 3: Cross multiply
   12,007.98x = 18,011.57 × 4,216.59
4. Step 4: Simplify right side
   12,007.98x = 75,947,384.86
5. Step 5: Solve for x
   x = 75,947,384.86/12,007.98
6. Step 6: Final answer
   x = 6,324.74