Finding the Fourth Proportional to 16,958.78, 23,405.34 and 10,591.88

Step by Step Solution

1. Step 1: Write the proportion equation
   16,958.78 : 23,405.34 = 10,591.88 : x
2. Step 2: Convert to fraction form
   16,958.78/23,405.34 = 10,591.88/x
3. Step 3: Cross multiply
   16,958.78x = 23,405.34 × 10,591.88
4. Step 4: Simplify right side
   16,958.78x = 247,906,552.64
5. Step 5: Solve for x
   x = 247,906,552.64/16,958.78
6. Step 6: Final answer
   x = 14,618.18