Finding the Fourth Proportional to 9,814.38, 14,698.89 and 8,939.58

Step by Step Solution

1. Step 1: Write the proportion equation
   9,814.38 : 14,698.89 = 8,939.58 : x
2. Step 2: Convert to fraction form
   9,814.38/14,698.89 = 8,939.58/x
3. Step 3: Cross multiply
   9,814.38x = 14,698.89 × 8,939.58
4. Step 4: Simplify right side
   9,814.38x = 131,401,903.07
5. Step 5: Solve for x
   x = 131,401,903.07/9,814.38
6. Step 6: Final answer
   x = 13,388.71