Finding the Fourth Proportional to 8,538.34, 12,807.54 and 3,340.54

Step by Step Solution

1. Step 1: Write the proportion equation
   8,538.34 : 12,807.54 = 3,340.54 : x
2. Step 2: Convert to fraction form
   8,538.34/12,807.54 = 3,340.54/x
3. Step 3: Cross multiply
   8,538.34x = 12,807.54 × 3,340.54
4. Step 4: Simplify right side
   8,538.34x = 42,784,099.67
5. Step 5: Solve for x
   x = 42,784,099.67/8,538.34
6. Step 6: Final answer
   x = 5,010.82