Finding the Fourth Proportional to 16,215.91, 22,385.50 and 9,500.60

Step by Step Solution

1. Step 1: Write the proportion equation
   16,215.91 : 22,385.50 = 9,500.60 : x
2. Step 2: Convert to fraction form
   16,215.91/22,385.50 = 9,500.60/x
3. Step 3: Cross multiply
   16,215.91x = 22,385.50 × 9,500.60
4. Step 4: Simplify right side
   16,215.91x = 212,675,713.51
5. Step 5: Solve for x
   x = 212,675,713.51/16,215.91
6. Step 6: Final answer
   x = 13,115.25