Finding the Fourth Proportional to 22,707.17, 31,336.18 and 12,499.38

Step by Step Solution

1. Step 1: Write the proportion equation
   22,707.17 : 31,336.18 = 12,499.38 : x
2. Step 2: Convert to fraction form
   22,707.17/31,336.18 = 12,499.38/x
3. Step 3: Cross multiply
   22,707.17x = 31,336.18 × 12,499.38
4. Step 4: Simplify right side
   22,707.17x = 391,682,759.07
5. Step 5: Solve for x
   x = 391,682,759.07/22,707.17
6. Step 6: Final answer
   x = 17,249.30