Finding the Fourth Proportional to 9,672.82, 13,356.03 and 7,431.15

Step by Step Solution

1. Step 1: Write the proportion equation
   9,672.82 : 13,356.03 = 7,431.15 : x
2. Step 2: Convert to fraction form
   9,672.82/13,356.03 = 7,431.15/x
3. Step 3: Cross multiply
   9,672.82x = 13,356.03 × 7,431.15
4. Step 4: Simplify right side
   9,672.82x = 99,250,662.33
5. Step 5: Solve for x
   x = 99,250,662.33/9,672.82
6. Step 6: Final answer
   x = 10,260.78