Finding the Fourth Proportional to 8,315.45, 12,475.50 and 3,388.62

Step by Step Solution

1. Step 1: Write the proportion equation
   8,315.45 : 12,475.50 = 3,388.62 : x
2. Step 2: Convert to fraction form
   8,315.45/12,475.50 = 3,388.62/x
3. Step 3: Cross multiply
   8,315.45x = 12,475.50 × 3,388.62
4. Step 4: Simplify right side
   8,315.45x = 42,274,728.81
5. Step 5: Solve for x
   x = 42,274,728.81/8,315.45
6. Step 6: Final answer
   x = 5,083.88