Finding the Fourth Proportional to 8,540.31, 12,801.71 and 3,273.90

Step by Step Solution

1. Step 1: Write the proportion equation
   8,540.31 : 12,801.71 = 3,273.90 : x
2. Step 2: Convert to fraction form
   8,540.31/12,801.71 = 3,273.90/x
3. Step 3: Cross multiply
   8,540.31x = 12,801.71 × 3,273.90
4. Step 4: Simplify right side
   8,540.31x = 41,911,502.00
5. Step 5: Solve for x
   x = 41,911,502.00/8,540.31
6. Step 6: Final answer
   x = 4,907.49