Finding the Fourth Proportional to 22,436, 30,961.80 and 12,500

Step by Step Solution

1. Step 1: Write the proportion equation
   22,436 : 30,961.80 = 12,500 : x
2. Step 2: Convert to fraction form
   22,436/30,961.80 = 12,500/x
3. Step 3: Cross multiply
   22,436x = 30,961.80 × 12,500
4. Step 4: Simplify right side
   22,436x = 387,022,500
5. Step 5: Solve for x
   x = 387,022,500/22,436
6. Step 6: Final answer
   x = 17,250.07