Finding the Fourth Proportional to 12,646.98, 17,456.88 and 7,340.76

Step by Step Solution

1. Step 1: Write the proportion equation
   12,646.98 : 17,456.88 = 7,340.76 : x
2. Step 2: Convert to fraction form
   12,646.98/17,456.88 = 7,340.76/x
3. Step 3: Cross multiply
   12,646.98x = 17,456.88 × 7,340.76
4. Step 4: Simplify right side
   12,646.98x = 128,146,766.43
5. Step 5: Solve for x
   x = 128,146,766.43/12,646.98
6. Step 6: Final answer
   x = 10,132.60