Finding the Fourth Proportional to 11,160.34, 15,398.17 and 7,974.61

Step by Step Solution

1. Step 1: Write the proportion equation
   11,160.34 : 15,398.17 = 7,974.61 : x
2. Step 2: Convert to fraction form
   11,160.34/15,398.17 = 7,974.61/x
3. Step 3: Cross multiply
   11,160.34x = 15,398.17 × 7,974.61
4. Step 4: Simplify right side
   11,160.34x = 122,794,342.03
5. Step 5: Solve for x
   x = 122,794,342.03/11,160.34
6. Step 6: Final answer
   x = 11,002.74