Finding the Fourth Proportional to 8,540.28, 12,810.40 and 3,342.52

Step by Step Solution

1. Step 1: Write the proportion equation
   8,540.28 : 12,810.40 = 3,342.52 : x
2. Step 2: Convert to fraction form
   8,540.28/12,810.40 = 3,342.52/x
3. Step 3: Cross multiply
   8,540.28x = 12,810.40 × 3,342.52
4. Step 4: Simplify right side
   8,540.28x = 42,819,018.21
5. Step 5: Solve for x
   x = 42,819,018.21/8,540.28
6. Step 6: Final answer
   x = 5,013.77