Finding the Fourth Proportional to 16,839.41, 23,238.54 and 9,286.02

Step by Step Solution

1. Step 1: Write the proportion equation
   16,839.41 : 23,238.54 = 9,286.02 : x
2. Step 2: Convert to fraction form
   16,839.41/23,238.54 = 9,286.02/x
3. Step 3: Cross multiply
   16,839.41x = 23,238.54 × 9,286.02
4. Step 4: Simplify right side
   16,839.41x = 215,793,547.21
5. Step 5: Solve for x
   x = 215,793,547.21/16,839.41
6. Step 6: Final answer
   x = 12,814.80