Finding the Fourth Proportional to 15,356, 21,192.72 and 8,732

Step by Step Solution

1. Step 1: Write the proportion equation
   15,356 : 21,192.72 = 8,732 : x
2. Step 2: Convert to fraction form
   15,356/21,192.72 = 8,732/x
3. Step 3: Cross multiply
   15,356x = 21,192.72 × 8,732
4. Step 4: Simplify right side
   15,356x = 185,054,831.04
5. Step 5: Solve for x
   x = 185,054,831.04/15,356
6. Step 6: Final answer
   x = 12,050.98