Finding the Fourth Proportional to 8,540.89, 12,813.81 and 3,542.34

Step by Step Solution

1. Step 1: Write the proportion equation
   8,540.89 : 12,813.81 = 3,542.34 : x
2. Step 2: Convert to fraction form
   8,540.89/12,813.81 = 3,542.34/x
3. Step 3: Cross multiply
   8,540.89x = 12,813.81 × 3,542.34
4. Step 4: Simplify right side
   8,540.89x = 45,390,871.72
5. Step 5: Solve for x
   x = 45,390,871.72/8,540.89
6. Step 6: Final answer
   x = 5,314.54