Finding the Fourth Proportional to 11,939.34, 16,469.49 and 7,457.61

Step by Step Solution

1. Step 1: Write the proportion equation
   11,939.34 : 16,469.49 = 7,457.61 : x
2. Step 2: Convert to fraction form
   11,939.34/16,469.49 = 7,457.61/x
3. Step 3: Cross multiply
   11,939.34x = 16,469.49 × 7,457.61
4. Step 4: Simplify right side
   11,939.34x = 122,823,033.32
5. Step 5: Solve for x
   x = 122,823,033.32/11,939.34
6. Step 6: Final answer
   x = 10,287.25