Finding the Fourth Proportional to 16,648.09, 22,958.72 and 12,408.55

Step by Step Solution

1. Step 1: Write the proportion equation
   16,648.09 : 22,958.72 = 12,408.55 : x
2. Step 2: Convert to fraction form
   16,648.09/22,958.72 = 12,408.55/x
3. Step 3: Cross multiply
   16,648.09x = 22,958.72 × 12,408.55
4. Step 4: Simplify right side
   16,648.09x = 284,884,381.82
5. Step 5: Solve for x
   x = 284,884,381.82/16,648.09
6. Step 6: Final answer
   x = 17,112.14