Finding the Fourth Proportional to 8,316.27, 12,476.76 and 3,389.46

Step by Step Solution

1. Step 1: Write the proportion equation
   8,316.27 : 12,476.76 = 3,389.46 : x
2. Step 2: Convert to fraction form
   8,316.27/12,476.76 = 3,389.46/x
3. Step 3: Cross multiply
   8,316.27x = 12,476.76 × 3,389.46
4. Step 4: Simplify right side
   8,316.27x = 42,289,478.95
5. Step 5: Solve for x
   x = 42,289,478.95/8,316.27
6. Step 6: Final answer
   x = 5,085.15