Finding the Fourth Proportional to 12,198.30, 18,300.50 and 5,629.08

Step by Step Solution

1. Step 1: Write the proportion equation
   12,198.30 : 18,300.50 = 5,629.08 : x
2. Step 2: Convert to fraction form
   12,198.30/18,300.50 = 5,629.08/x
3. Step 3: Cross multiply
   12,198.30x = 18,300.50 × 5,629.08
4. Step 4: Simplify right side
   12,198.30x = 103,014,978.54
5. Step 5: Solve for x
   x = 103,014,978.54/12,198.30
6. Step 6: Final answer
   x = 8,445.03