Finding the Fourth Proportional to 12,951.34, 17,872.92 and 7,648.76

Step by Step Solution

1. Step 1: Write the proportion equation
   12,951.34 : 17,872.92 = 7,648.76 : x
2. Step 2: Convert to fraction form
   12,951.34/17,872.92 = 7,648.76/x
3. Step 3: Cross multiply
   12,951.34x = 17,872.92 × 7,648.76
4. Step 4: Simplify right side
   12,951.34x = 136,705,720.26
5. Step 5: Solve for x
   x = 136,705,720.26/12,951.34
6. Step 6: Final answer
   x = 10,555.34