Finding the Fourth Proportional to 11,131.22, 15,371.42 and 7,159.24

Step by Step Solution

1. Step 1: Write the proportion equation
   11,131.22 : 15,371.42 = 7,159.24 : x
2. Step 2: Convert to fraction form
   11,131.22/15,371.42 = 7,159.24/x
3. Step 3: Cross multiply
   11,131.22x = 15,371.42 × 7,159.24
4. Step 4: Simplify right side
   11,131.22x = 110,047,622.15
5. Step 5: Solve for x
   x = 110,047,622.15/11,131.22
6. Step 6: Final answer
   x = 9,886.39