Finding the Fourth Proportional to 6,849.12, 9,451.78 and 3,705.31

Step by Step Solution

1. Step 1: Write the proportion equation
   6,849.12 : 9,451.78 = 3,705.31 : x
2. Step 2: Convert to fraction form
   6,849.12/9,451.78 = 3,705.31/x
3. Step 3: Cross multiply
   6,849.12x = 9,451.78 × 3,705.31
4. Step 4: Simplify right side
   6,849.12x = 35,021,774.95
5. Step 5: Solve for x
   x = 35,021,774.95/6,849.12
6. Step 6: Final answer
   x = 5,113.32