Finding the Fourth Proportional to 9,928.62, 13,715.73 and 7,936.56

Step by Step Solution

1. Step 1: Write the proportion equation
   9,928.62 : 13,715.73 = 7,936.56 : x
2. Step 2: Convert to fraction form
   9,928.62/13,715.73 = 7,936.56/x
3. Step 3: Cross multiply
   9,928.62x = 13,715.73 × 7,936.56
4. Step 4: Simplify right side
   9,928.62x = 108,855,714.09
5. Step 5: Solve for x
   x = 108,855,714.09/9,928.62
6. Step 6: Final answer
   x = 10,963.83