Finding the Fourth Proportional to 11,661.57, 17,474.00 and 7,272.45

Step by Step Solution

1. Step 1: Write the proportion equation
   11,661.57 : 17,474.00 = 7,272.45 : x
2. Step 2: Convert to fraction form
   11,661.57/17,474.00 = 7,272.45/x
3. Step 3: Cross multiply
   11,661.57x = 17,474.00 × 7,272.45
4. Step 4: Simplify right side
   11,661.57x = 127,078,754.94
5. Step 5: Solve for x
   x = 127,078,754.94/11,661.57
6. Step 6: Final answer
   x = 10,897.23