Finding the Fourth Proportional to 12,496.84, 18,612.65 and 12,436.49

Step by Step Solution

1. Step 1: Write the proportion equation
   12,496.84 : 18,612.65 = 12,436.49 : x
2. Step 2: Convert to fraction form
   12,496.84/18,612.65 = 12,436.49/x
3. Step 3: Cross multiply
   12,496.84x = 18,612.65 × 12,436.49
4. Step 4: Simplify right side
   12,496.84x = 231,476,113.22
5. Step 5: Solve for x
   x = 231,476,113.22/12,496.84
6. Step 6: Final answer
   x = 18,522.78