Finding the Fourth Proportional to 12,930.72, 17,843.60 and 7,625.76

Step by Step Solution

1. Step 1: Write the proportion equation
   12,930.72 : 17,843.60 = 7,625.76 : x
2. Step 2: Convert to fraction form
   12,930.72/17,843.60 = 7,625.76/x
3. Step 3: Cross multiply
   12,930.72x = 17,843.60 × 7,625.76
4. Step 4: Simplify right side
   12,930.72x = 136,071,011.14
5. Step 5: Solve for x
   x = 136,071,011.14/12,930.72
6. Step 6: Final answer
   x = 10,523.08