Finding the Fourth Proportional to 8,360.05, 12,540.15 and 3,427.76

Step by Step Solution

1. Step 1: Write the proportion equation
   8,360.05 : 12,540.15 = 3,427.76 : x
2. Step 2: Convert to fraction form
   8,360.05/12,540.15 = 3,427.76/x
3. Step 3: Cross multiply
   8,360.05x = 12,540.15 × 3,427.76
4. Step 4: Simplify right side
   8,360.05x = 42,984,624.56
5. Step 5: Solve for x
   x = 42,984,624.56/8,360.05
6. Step 6: Final answer
   x = 5,141.67