Finding the Fourth Proportional to 16,951.78, 25,443.31 and 8,637.74

Step by Step Solution

1. Step 1: Write the proportion equation
   16,951.78 : 25,443.31 = 8,637.74 : x
2. Step 2: Convert to fraction form
   16,951.78/25,443.31 = 8,637.74/x
3. Step 3: Cross multiply
   16,951.78x = 25,443.31 × 8,637.74
4. Step 4: Simplify right side
   16,951.78x = 219,772,696.52
5. Step 5: Solve for x
   x = 219,772,696.52/16,951.78
6. Step 6: Final answer
   x = 12,964.58