Finding the Fourth Proportional to 9,923.31, 13,694.13 and 5,447.12

Step by Step Solution

1. Step 1: Write the proportion equation
   9,923.31 : 13,694.13 = 5,447.12 : x
2. Step 2: Convert to fraction form
   9,923.31/13,694.13 = 5,447.12/x
3. Step 3: Cross multiply
   9,923.31x = 13,694.13 × 5,447.12
4. Step 4: Simplify right side
   9,923.31x = 74,593,500.93
5. Step 5: Solve for x
   x = 74,593,500.93/9,923.31
6. Step 6: Final answer
   x = 7,517.00