Finding the Fourth Proportional to 11,491.38, 15,859.82 and 7,017.72

Step by Step Solution

1. Step 1: Write the proportion equation
   11,491.38 : 15,859.82 = 7,017.72 : x
2. Step 2: Convert to fraction form
   11,491.38/15,859.82 = 7,017.72/x
3. Step 3: Cross multiply
   11,491.38x = 15,859.82 × 7,017.72
4. Step 4: Simplify right side
   11,491.38x = 111,299,776.01
5. Step 5: Solve for x
   x = 111,299,776.01/11,491.38
6. Step 6: Final answer
   x = 9,685.50