Finding the Fourth Proportional to 6,642.32, 9,961.25 and 3,353.31

Step by Step Solution

1. Step 1: Write the proportion equation
   6,642.32 : 9,961.25 = 3,353.31 : x
2. Step 2: Convert to fraction form
   6,642.32/9,961.25 = 3,353.31/x
3. Step 3: Cross multiply
   6,642.32x = 9,961.25 × 3,353.31
4. Step 4: Simplify right side
   6,642.32x = 33,403,142.47
5. Step 5: Solve for x
   x = 33,403,142.47/6,642.32
6. Step 6: Final answer
   x = 5,028.84