Finding the Fourth Proportional to 16,679.91, 23,018.31 and 9,126.06

Step by Step Solution

1. Step 1: Write the proportion equation
   16,679.91 : 23,018.31 = 9,126.06 : x
2. Step 2: Convert to fraction form
   16,679.91/23,018.31 = 9,126.06/x
3. Step 3: Cross multiply
   16,679.91x = 23,018.31 × 9,126.06
4. Step 4: Simplify right side
   16,679.91x = 210,066,478.16
5. Step 5: Solve for x
   x = 210,066,478.16/16,679.91
6. Step 6: Final answer
   x = 12,593.98