Finding the Fourth Proportional to 8,483.69, 12,726.74 and 2,640.89

Step by Step Solution

1. Step 1: Write the proportion equation
   8,483.69 : 12,726.74 = 2,640.89 : x
2. Step 2: Convert to fraction form
   8,483.69/12,726.74 = 2,640.89/x
3. Step 3: Cross multiply
   8,483.69x = 12,726.74 × 2,640.89
4. Step 4: Simplify right side
   8,483.69x = 33,609,863.37
5. Step 5: Solve for x
   x = 33,609,863.37/8,483.69
6. Step 6: Final answer
   x = 3,961.71