Finding the Fourth Proportional to 9,009.97, 12,431.76 and 5,230.96

Step by Step Solution

1. Step 1: Write the proportion equation
   9,009.97 : 12,431.76 = 5,230.96 : x
2. Step 2: Convert to fraction form
   9,009.97/12,431.76 = 5,230.96/x
3. Step 3: Cross multiply
   9,009.97x = 12,431.76 × 5,230.96
4. Step 4: Simplify right side
   9,009.97x = 65,030,039.29
5. Step 5: Solve for x
   x = 65,030,039.29/9,009.97
6. Step 6: Final answer
   x = 7,217.56