Finding the Fourth Proportional to 8,483.56, 12,726.56 and 2,640.76

Step by Step Solution

1. Step 1: Write the proportion equation
   8,483.56 : 12,726.56 = 2,640.76 : x
2. Step 2: Convert to fraction form
   8,483.56/12,726.56 = 2,640.76/x
3. Step 3: Cross multiply
   8,483.56x = 12,726.56 × 2,640.76
4. Step 4: Simplify right side
   8,483.56x = 33,607,790.59
5. Step 5: Solve for x
   x = 33,607,790.59/8,483.56
6. Step 6: Final answer
   x = 3,961.52