Finding the Fourth Proportional to 8,499.40, 12,749.56 and 2,656.48

Step by Step Solution

1. Step 1: Write the proportion equation
   8,499.40 : 12,749.56 = 2,656.48 : x
2. Step 2: Convert to fraction form
   8,499.40/12,749.56 = 2,656.48/x
3. Step 3: Cross multiply
   8,499.40x = 12,749.56 × 2,656.48
4. Step 4: Simplify right side
   8,499.40x = 33,868,951.15
5. Step 5: Solve for x
   x = 33,868,951.15/8,499.40
6. Step 6: Final answer
   x = 3,984.86