Finding the Fourth Proportional to 8,315.52, 12,470.21 and 3,382.47

Step by Step Solution

1. Step 1: Write the proportion equation
   8,315.52 : 12,470.21 = 3,382.47 : x
2. Step 2: Convert to fraction form
   8,315.52/12,470.21 = 3,382.47/x
3. Step 3: Cross multiply
   8,315.52x = 12,470.21 × 3,382.47
4. Step 4: Simplify right side
   8,315.52x = 42,180,094.31
5. Step 5: Solve for x
   x = 42,180,094.31/8,315.52
6. Step 6: Final answer
   x = 5,072.45