Finding the Fourth Proportional to 22,435, 30,960.42 and 12,499

Step by Step Solution

1. Step 1: Write the proportion equation
   22,435 : 30,960.42 = 12,499 : x
2. Step 2: Convert to fraction form
   22,435/30,960.42 = 12,499/x
3. Step 3: Cross multiply
   22,435x = 30,960.42 × 12,499
4. Step 4: Simplify right side
   22,435x = 386,974,289.58
5. Step 5: Solve for x
   x = 386,974,289.58/22,435
6. Step 6: Final answer
   x = 17,248.69