Finding the Fourth Proportional to 6,273.59, 9,411.96 and 4,428.31

Step by Step Solution

1. Step 1: Write the proportion equation
   6,273.59 : 9,411.96 = 4,428.31 : x
2. Step 2: Convert to fraction form
   6,273.59/9,411.96 = 4,428.31/x
3. Step 3: Cross multiply
   6,273.59x = 9,411.96 × 4,428.31
4. Step 4: Simplify right side
   6,273.59x = 41,679,076.59
5. Step 5: Solve for x
   x = 41,679,076.59/6,273.59
6. Step 6: Final answer
   x = 6,643.58