Finding the Fourth Proportional to 6,978.56, 10,471.28 and 3,281.12

Step by Step Solution

1. Step 1: Write the proportion equation
   6,978.56 : 10,471.28 = 3,281.12 : x
2. Step 2: Convert to fraction form
   6,978.56/10,471.28 = 3,281.12/x
3. Step 3: Cross multiply
   6,978.56x = 10,471.28 × 3,281.12
4. Step 4: Simplify right side
   6,978.56x = 34,357,526.23
5. Step 5: Solve for x
   x = 34,357,526.23/6,978.56
6. Step 6: Final answer
   x = 4,923.30