Finding the Fourth Proportional to 11,515.72, 17,273.76 and 3,617.98

Step by Step Solution

1. Step 1: Write the proportion equation
   11,515.72 : 17,273.76 = 3,617.98 : x
2. Step 2: Convert to fraction form
   11,515.72/17,273.76 = 3,617.98/x
3. Step 3: Cross multiply
   11,515.72x = 17,273.76 × 3,617.98
4. Step 4: Simplify right side
   11,515.72x = 62,496,118.20
5. Step 5: Solve for x
   x = 62,496,118.20/11,515.72
6. Step 6: Final answer
   x = 5,427.03