Finding the Fourth Proportional to 12,221.37, 16,864.56 and 7,505.73

Step by Step Solution

1. Step 1: Write the proportion equation
   12,221.37 : 16,864.56 = 7,505.73 : x
2. Step 2: Convert to fraction form
   12,221.37/16,864.56 = 7,505.73/x
3. Step 3: Cross multiply
   12,221.37x = 16,864.56 × 7,505.73
4. Step 4: Simplify right side
   12,221.37x = 126,580,833.93
5. Step 5: Solve for x
   x = 126,580,833.93/12,221.37
6. Step 6: Final answer
   x = 10,357.34