Finding the Fourth Proportional to 8,111.72, 11,188.41 and 5,273.85

Step by Step Solution

1. Step 1: Write the proportion equation
   8,111.72 : 11,188.41 = 5,273.85 : x
2. Step 2: Convert to fraction form
   8,111.72/11,188.41 = 5,273.85/x
3. Step 3: Cross multiply
   8,111.72x = 11,188.41 × 5,273.85
4. Step 4: Simplify right side
   8,111.72x = 59,006,018.26
5. Step 5: Solve for x
   x = 59,006,018.26/8,111.72
6. Step 6: Final answer
   x = 7,274.17