Finding the Fourth Proportional to 8,315.07, 12,470.48 and 2,470.31

Step by Step Solution

1. Step 1: Write the proportion equation
   8,315.07 : 12,470.48 = 2,470.31 : x
2. Step 2: Convert to fraction form
   8,315.07/12,470.48 = 2,470.31/x
3. Step 3: Cross multiply
   8,315.07x = 12,470.48 × 2,470.31
4. Step 4: Simplify right side
   8,315.07x = 30,805,970.27
5. Step 5: Solve for x
   x = 30,805,970.27/8,315.07
6. Step 6: Final answer
   x = 3,704.84