Finding the Fourth Proportional to 6,819.22, 10,219.35 and 3,112.18

Step by Step Solution

1. Step 1: Write the proportion equation
   6,819.22 : 10,219.35 = 3,112.18 : x
2. Step 2: Convert to fraction form
   6,819.22/10,219.35 = 3,112.18/x
3. Step 3: Cross multiply
   6,819.22x = 10,219.35 × 3,112.18
4. Step 4: Simplify right side
   6,819.22x = 31,804,456.68
5. Step 5: Solve for x
   x = 31,804,456.68/6,819.22
6. Step 6: Final answer
   x = 4,663.94