Finding the Fourth Proportional to 11,360.22, 15,676.31 and 7,111.09

Step by Step Solution

1. Step 1: Write the proportion equation
   11,360.22 : 15,676.31 = 7,111.09 : x
2. Step 2: Convert to fraction form
   11,360.22/15,676.31 = 7,111.09/x
3. Step 3: Cross multiply
   11,360.22x = 15,676.31 × 7,111.09
4. Step 4: Simplify right side
   11,360.22x = 111,475,668.65
5. Step 5: Solve for x
   x = 111,475,668.65/11,360.22
6. Step 6: Final answer
   x = 9,812.80