Finding the Fourth Proportional to 8,310.16, 12,470.20 and 3,379.42

Step by Step Solution

1. Step 1: Write the proportion equation
   8,310.16 : 12,470.20 = 3,379.42 : x
2. Step 2: Convert to fraction form
   8,310.16/12,470.20 = 3,379.42/x
3. Step 3: Cross multiply
   8,310.16x = 12,470.20 × 3,379.42
4. Step 4: Simplify right side
   8,310.16x = 42,142,043.28
5. Step 5: Solve for x
   x = 42,142,043.28/8,310.16
6. Step 6: Final answer
   x = 5,071.15