Finding the Fourth Proportional to 8,315.82, 12,476.07 and 3,389.00

Step by Step Solution

1. Step 1: Write the proportion equation
   8,315.82 : 12,476.07 = 3,389.00 : x
2. Step 2: Convert to fraction form
   8,315.82/12,476.07 = 3,389.00/x
3. Step 3: Cross multiply
   8,315.82x = 12,476.07 × 3,389.00
4. Step 4: Simplify right side
   8,315.82x = 42,281,338.85
5. Step 5: Solve for x
   x = 42,281,338.85/8,315.82
6. Step 6: Final answer
   x = 5,084.45