Finding the Fourth Proportional to 8,081.50, 11,152.61 and 5,287

Step by Step Solution

1. Step 1: Write the proportion equation
   8,081.50 : 11,152.61 = 5,287 : x
2. Step 2: Convert to fraction form
   8,081.50/11,152.61 = 5,287/x
3. Step 3: Cross multiply
   8,081.50x = 11,152.61 × 5,287
4. Step 4: Simplify right side
   8,081.50x = 58,963,849.07
5. Step 5: Solve for x
   x = 58,963,849.07/8,081.50
6. Step 6: Final answer
   x = 7,296.15