Finding the Fourth Proportional to 22,426, 30,948.84 and 12,490

Step by Step Solution

1. Step 1: Write the proportion equation
   22,426 : 30,948.84 = 12,490 : x
2. Step 2: Convert to fraction form
   22,426/30,948.84 = 12,490/x
3. Step 3: Cross multiply
   22,426x = 30,948.84 × 12,490
4. Step 4: Simplify right side
   22,426x = 386,551,011.60
5. Step 5: Solve for x
   x = 386,551,011.60/22,426
6. Step 6: Final answer
   x = 17,236.73