Finding the Fourth Proportional to 16,290.81, 24,435.79 and 5,198.18

Step by Step Solution

1. Step 1: Write the proportion equation
   16,290.81 : 24,435.79 = 5,198.18 : x
2. Step 2: Convert to fraction form
   16,290.81/24,435.79 = 5,198.18/x
3. Step 3: Cross multiply
   16,290.81x = 24,435.79 × 5,198.18
4. Step 4: Simplify right side
   16,290.81x = 127,021,499.69
5. Step 5: Solve for x
   x = 127,021,499.69/16,290.81
6. Step 6: Final answer
   x = 7,797.13