Finding the Fourth Proportional to 12,951.83, 17,872.83 and 7,644.71

Step by Step Solution

1. Step 1: Write the proportion equation
   12,951.83 : 17,872.83 = 7,644.71 : x
2. Step 2: Convert to fraction form
   12,951.83/17,872.83 = 7,644.71/x
3. Step 3: Cross multiply
   12,951.83x = 17,872.83 × 7,644.71
4. Step 4: Simplify right side
   12,951.83x = 136,632,512.87
5. Step 5: Solve for x
   x = 136,632,512.87/12,951.83
6. Step 6: Final answer
   x = 10,549.29