Finding the Fourth Proportional to 8,538.28, 12,807.40 and 3,340.52

Step by Step Solution

1. Step 1: Write the proportion equation
   8,538.28 : 12,807.40 = 3,340.52 : x
2. Step 2: Convert to fraction form
   8,538.28/12,807.40 = 3,340.52/x
3. Step 3: Cross multiply
   8,538.28x = 12,807.40 × 3,340.52
4. Step 4: Simplify right side
   8,538.28x = 42,783,375.85
5. Step 5: Solve for x
   x = 42,783,375.85/8,538.28
6. Step 6: Final answer
   x = 5,010.77