Finding the Fourth Proportional to 22,519.45, 31,076.85 and 12,310.53

Step by Step Solution

1. Step 1: Write the proportion equation
   22,519.45 : 31,076.85 = 12,310.53 : x
2. Step 2: Convert to fraction form
   22,519.45/31,076.85 = 12,310.53/x
3. Step 3: Cross multiply
   22,519.45x = 31,076.85 × 12,310.53
4. Step 4: Simplify right side
   22,519.45x = 382,572,354.61
5. Step 5: Solve for x
   x = 382,572,354.61/22,519.45
6. Step 6: Final answer
   x = 16,988.53