Finding the Fourth Proportional to 8,933.56, 12,323.05 and 7,428.49

Step by Step Solution

1. Step 1: Write the proportion equation
   8,933.56 : 12,323.05 = 7,428.49 : x
2. Step 2: Convert to fraction form
   8,933.56/12,323.05 = 7,428.49/x
3. Step 3: Cross multiply
   8,933.56x = 12,323.05 × 7,428.49
4. Step 4: Simplify right side
   8,933.56x = 91,541,604.32
5. Step 5: Solve for x
   x = 91,541,604.32/8,933.56
6. Step 6: Final answer
   x = 10,246.94