Finding the Fourth Proportional to 9,943.60, 13,721.98 and 5,467.31

Step by Step Solution

1. Step 1: Write the proportion equation
   9,943.60 : 13,721.98 = 5,467.31 : x
2. Step 2: Convert to fraction form
   9,943.60/13,721.98 = 5,467.31/x
3. Step 3: Cross multiply
   9,943.60x = 13,721.98 × 5,467.31
4. Step 4: Simplify right side
   9,943.60x = 75,022,318.47
5. Step 5: Solve for x
   x = 75,022,318.47/9,943.60
6. Step 6: Final answer
   x = 7,544.78