Finding the Fourth Proportional to 6,805.32, 10,212.12 and 3,109.32

Step by Step Solution

1. Step 1: Write the proportion equation
   6,805.32 : 10,212.12 = 3,109.32 : x
2. Step 2: Convert to fraction form
   6,805.32/10,212.12 = 3,109.32/x
3. Step 3: Cross multiply
   6,805.32x = 10,212.12 × 3,109.32
4. Step 4: Simplify right side
   6,805.32x = 31,752,748.96
5. Step 5: Solve for x
   x = 31,752,748.96/6,805.32
6. Step 6: Final answer
   x = 4,665.87