Finding the Fourth Proportional to 8,309.55, 12,463.98 and 3,379

Step by Step Solution

1. Step 1: Write the proportion equation
   8,309.55 : 12,463.98 = 3,379 : x
2. Step 2: Convert to fraction form
   8,309.55/12,463.98 = 3,379/x
3. Step 3: Cross multiply
   8,309.55x = 12,463.98 × 3,379
4. Step 4: Simplify right side
   8,309.55x = 42,115,788.42
5. Step 5: Solve for x
   x = 42,115,788.42/8,309.55
6. Step 6: Final answer
   x = 5,068.36