Finding the Fourth Proportional to 9,007.56, 12,428.82 and 5,231.16

Step by Step Solution

1. Step 1: Write the proportion equation
   9,007.56 : 12,428.82 = 5,231.16 : x
2. Step 2: Convert to fraction form
   9,007.56/12,428.82 = 5,231.16/x
3. Step 3: Cross multiply
   9,007.56x = 12,428.82 × 5,231.16
4. Step 4: Simplify right side
   9,007.56x = 65,017,146.03
5. Step 5: Solve for x
   x = 65,017,146.03/9,007.56
6. Step 6: Final answer
   x = 7,218.06