Finding the Fourth Proportional to 9,447.91, 14,208.83 and 7,971.69

Step by Step Solution

1. Step 1: Write the proportion equation
   9,447.91 : 14,208.83 = 7,971.69 : x
2. Step 2: Convert to fraction form
   9,447.91/14,208.83 = 7,971.69/x
3. Step 3: Cross multiply
   9,447.91x = 14,208.83 × 7,971.69
4. Step 4: Simplify right side
   9,447.91x = 113,268,388.02
5. Step 5: Solve for x
   x = 113,268,388.02/9,447.91
6. Step 6: Final answer
   x = 11,988.72