Finding the Fourth Proportional to 6,483.86, 8,947.49 and 3,970.16

Step by Step Solution

1. Step 1: Write the proportion equation
   6,483.86 : 8,947.49 = 3,970.16 : x
2. Step 2: Convert to fraction form
   6,483.86/8,947.49 = 3,970.16/x
3. Step 3: Cross multiply
   6,483.86x = 8,947.49 × 3,970.16
4. Step 4: Simplify right side
   6,483.86x = 35,522,966.90
5. Step 5: Solve for x
   x = 35,522,966.90/6,483.86
6. Step 6: Final answer
   x = 5,478.68