Finding the Fourth Proportional to 16,131.45, 22,262.60 and 9,415.64

Step by Step Solution

1. Step 1: Write the proportion equation
   16,131.45 : 22,262.60 = 9,415.64 : x
2. Step 2: Convert to fraction form
   16,131.45/22,262.60 = 9,415.64/x
3. Step 3: Cross multiply
   16,131.45x = 22,262.60 × 9,415.64
4. Step 4: Simplify right side
   16,131.45x = 209,616,653.30
5. Step 5: Solve for x
   x = 209,616,653.30/16,131.45
6. Step 6: Final answer
   x = 12,994.28