Finding the Fourth Proportional to 11,568.30, 15,936.90 and 9,538.49

Step by Step Solution

1. Step 1: Write the proportion equation
   11,568.30 : 15,936.90 = 9,538.49 : x
2. Step 2: Convert to fraction form
   11,568.30/15,936.90 = 9,538.49/x
3. Step 3: Cross multiply
   11,568.30x = 15,936.90 × 9,538.49
4. Step 4: Simplify right side
   11,568.30x = 152,013,881.60
5. Step 5: Solve for x
   x = 152,013,881.60/11,568.30
6. Step 6: Final answer
   x = 13,140.55