Finding the Fourth Proportional to 12,645.52, 17,449.83 and 7,340.73

Step by Step Solution

1. Step 1: Write the proportion equation
   12,645.52 : 17,449.83 = 7,340.73 : x
2. Step 2: Convert to fraction form
   12,645.52/17,449.83 = 7,340.73/x
3. Step 3: Cross multiply
   12,645.52x = 17,449.83 × 7,340.73
4. Step 4: Simplify right side
   12,645.52x = 128,094,425.14
5. Step 5: Solve for x
   x = 128,094,425.14/12,645.52
6. Step 6: Final answer
   x = 10,129.63