Finding the Fourth Proportional to 16,415.82, 24,631.42 and 8,091.30

Step by Step Solution

1. Step 1: Write the proportion equation
   16,415.82 : 24,631.42 = 8,091.30 : x
2. Step 2: Convert to fraction form
   16,415.82/24,631.42 = 8,091.30/x
3. Step 3: Cross multiply
   16,415.82x = 24,631.42 × 8,091.30
4. Step 4: Simplify right side
   16,415.82x = 199,300,208.65
5. Step 5: Solve for x
   x = 199,300,208.65/16,415.82
6. Step 6: Final answer
   x = 12,140.74