Finding the Fourth Proportional to 12,951.12, 17,872.57 and 7,646.28

Step by Step Solution

1. Step 1: Write the proportion equation
   12,951.12 : 17,872.57 = 7,646.28 : x
2. Step 2: Convert to fraction form
   12,951.12/17,872.57 = 7,646.28/x
3. Step 3: Cross multiply
   12,951.12x = 17,872.57 × 7,646.28
4. Step 4: Simplify right side
   12,951.12x = 136,658,620.27
5. Step 5: Solve for x
   x = 136,658,620.27/12,951.12
6. Step 6: Final answer
   x = 10,551.88