Finding the Fourth Proportional to 8,727.96, 12,047.05 and 5,144.99

Step by Step Solution

1. Step 1: Write the proportion equation
   8,727.96 : 12,047.05 = 5,144.99 : x
2. Step 2: Convert to fraction form
   8,727.96/12,047.05 = 5,144.99/x
3. Step 3: Cross multiply
   8,727.96x = 12,047.05 × 5,144.99
4. Step 4: Simplify right side
   8,727.96x = 61,981,951.78
5. Step 5: Solve for x
   x = 61,981,951.78/8,727.96
6. Step 6: Final answer
   x = 7,101.54