Finding the Fourth Proportional to 10,443.78, 15,654.60 and 6,494.94

Step by Step Solution

1. Step 1: Write the proportion equation
   10,443.78 : 15,654.60 = 6,494.94 : x
2. Step 2: Convert to fraction form
   10,443.78/15,654.60 = 6,494.94/x
3. Step 3: Cross multiply
   10,443.78x = 15,654.60 × 6,494.94
4. Step 4: Simplify right side
   10,443.78x = 101,675,687.72
5. Step 5: Solve for x
   x = 101,675,687.72/10,443.78
6. Step 6: Final answer
   x = 9,735.53