Finding the Fourth Proportional to 11,083.91, 15,291.45 and 7,309.10

Step by Step Solution

1. Step 1: Write the proportion equation
   11,083.91 : 15,291.45 = 7,309.10 : x
2. Step 2: Convert to fraction form
   11,083.91/15,291.45 = 7,309.10/x
3. Step 3: Cross multiply
   11,083.91x = 15,291.45 × 7,309.10
4. Step 4: Simplify right side
   11,083.91x = 111,766,775.42
5. Step 5: Solve for x
   x = 111,766,775.42/11,083.91
6. Step 6: Final answer
   x = 10,083.70