Finding the Fourth Proportional to 16,678.10, 23,004.86 and 9,958.47

Step by Step Solution

1. Step 1: Write the proportion equation
   16,678.10 : 23,004.86 = 9,958.47 : x
2. Step 2: Convert to fraction form
   16,678.10/23,004.86 = 9,958.47/x
3. Step 3: Cross multiply
   16,678.10x = 23,004.86 × 9,958.47
4. Step 4: Simplify right side
   16,678.10x = 229,093,158.37
5. Step 5: Solve for x
   x = 229,093,158.37/16,678.10
6. Step 6: Final answer
   x = 13,736.17