Finding the Fourth Proportional to 8,308.10, 12,461.85 and 3,377.60

Step by Step Solution

1. Step 1: Write the proportion equation
   8,308.10 : 12,461.85 = 3,377.60 : x
2. Step 2: Convert to fraction form
   8,308.10/12,461.85 = 3,377.60/x
3. Step 3: Cross multiply
   8,308.10x = 12,461.85 × 3,377.60
4. Step 4: Simplify right side
   8,308.10x = 42,091,144.56
5. Step 5: Solve for x
   x = 42,091,144.56/8,308.10
6. Step 6: Final answer
   x = 5,066.28