Finding the Fourth Proportional to 8,540.34, 12,810.54 and 3,342.54

Step by Step Solution

1. Step 1: Write the proportion equation
   8,540.34 : 12,810.54 = 3,342.54 : x
2. Step 2: Convert to fraction form
   8,540.34/12,810.54 = 3,342.54/x
3. Step 3: Cross multiply
   8,540.34x = 12,810.54 × 3,342.54
4. Step 4: Simplify right side
   8,540.34x = 42,819,742.37
5. Step 5: Solve for x
   x = 42,819,742.37/8,540.34
6. Step 6: Final answer
   x = 5,013.82