Finding the Fourth Proportional to 6,272.81, 8,656.86 and 3,478.31

Step by Step Solution

1. Step 1: Write the proportion equation
   6,272.81 : 8,656.86 = 3,478.31 : x
2. Step 2: Convert to fraction form
   6,272.81/8,656.86 = 3,478.31/x
3. Step 3: Cross multiply
   6,272.81x = 8,656.86 × 3,478.31
4. Step 4: Simplify right side
   6,272.81x = 30,111,182.03
5. Step 5: Solve for x
   x = 30,111,182.03/6,272.81
6. Step 6: Final answer
   x = 4,800.27