Finding the Fourth Proportional to 22,422, 30,943.32 and 12,486

Step by Step Solution

1. Step 1: Write the proportion equation
   22,422 : 30,943.32 = 12,486 : x
2. Step 2: Convert to fraction form
   22,422/30,943.32 = 12,486/x
3. Step 3: Cross multiply
   22,422x = 30,943.32 × 12,486
4. Step 4: Simplify right side
   22,422x = 386,358,293.52
5. Step 5: Solve for x
   x = 386,358,293.52/22,422
6. Step 6: Final answer
   x = 17,231.21