Finding the Fourth Proportional to 11,118.31, 15,342.72 and 8,146.73

Step by Step Solution

1. Step 1: Write the proportion equation
   11,118.31 : 15,342.72 = 8,146.73 : x
2. Step 2: Convert to fraction form
   11,118.31/15,342.72 = 8,146.73/x
3. Step 3: Cross multiply
   11,118.31x = 15,342.72 × 8,146.73
4. Step 4: Simplify right side
   11,118.31x = 124,992,918.81
5. Step 5: Solve for x
   x = 124,992,918.81/11,118.31
6. Step 6: Final answer
   x = 11,242.08