Finding the Fourth Proportional to 17,924.10, 26,870.49 and 8,559.42

Step by Step Solution

1. Step 1: Write the proportion equation
   17,924.10 : 26,870.49 = 8,559.42 : x
2. Step 2: Convert to fraction form
   17,924.10/26,870.49 = 8,559.42/x
3. Step 3: Cross multiply
   17,924.10x = 26,870.49 × 8,559.42
4. Step 4: Simplify right side
   17,924.10x = 229,995,809.52
5. Step 5: Solve for x
   x = 229,995,809.52/17,924.10
6. Step 6: Final answer
   x = 12,831.65