Finding the Fourth Proportional to 16,631.20, 22,959.56 and 12,845.88

Step by Step Solution

1. Step 1: Write the proportion equation
   16,631.20 : 22,959.56 = 12,845.88 : x
2. Step 2: Convert to fraction form
   16,631.20/22,959.56 = 12,845.88/x
3. Step 3: Cross multiply
   16,631.20x = 22,959.56 × 12,845.88
4. Step 4: Simplify right side
   16,631.20x = 294,935,752.61
5. Step 5: Solve for x
   x = 294,935,752.61/16,631.20
6. Step 6: Final answer
   x = 17,733.88