Finding the Fourth Proportional to 6,705.78, 9,253.20 and 3,721.32

Step by Step Solution

1. Step 1: Write the proportion equation
   6,705.78 : 9,253.20 = 3,721.32 : x
2. Step 2: Convert to fraction form
   6,705.78/9,253.20 = 3,721.32/x
3. Step 3: Cross multiply
   6,705.78x = 9,253.20 × 3,721.32
4. Step 4: Simplify right side
   6,705.78x = 34,434,118.22
5. Step 5: Solve for x
   x = 34,434,118.22/6,705.78
6. Step 6: Final answer
   x = 5,134.99