Finding the Fourth Proportional to 12,198.29, 18,300 and 4,300.47

Step by Step Solution

1. Step 1: Write the proportion equation
   12,198.29 : 18,300 = 4,300.47 : x
2. Step 2: Convert to fraction form
   12,198.29/18,300 = 4,300.47/x
3. Step 3: Cross multiply
   12,198.29x = 18,300 × 4,300.47
4. Step 4: Simplify right side
   12,198.29x = 78,698,601
5. Step 5: Solve for x
   x = 78,698,601/12,198.29
6. Step 6: Final answer
   x = 6,451.61