Finding the Fourth Proportional to 15,112.73, 20,849.59 and 8,738.15

Step by Step Solution

1. Step 1: Write the proportion equation
   15,112.73 : 20,849.59 = 8,738.15 : x
2. Step 2: Convert to fraction form
   15,112.73/20,849.59 = 8,738.15/x
3. Step 3: Cross multiply
   15,112.73x = 20,849.59 × 8,738.15
4. Step 4: Simplify right side
   15,112.73x = 182,186,875.14
5. Step 5: Solve for x
   x = 182,186,875.14/15,112.73
6. Step 6: Final answer
   x = 12,055.20