Finding the Fourth Proportional to 8,573.82, 12,831.51 and 7,188.72

Step by Step Solution

1. Step 1: Write the proportion equation
   8,573.82 : 12,831.51 = 7,188.72 : x
2. Step 2: Convert to fraction form
   8,573.82/12,831.51 = 7,188.72/x
3. Step 3: Cross multiply
   8,573.82x = 12,831.51 × 7,188.72
4. Step 4: Simplify right side
   8,573.82x = 92,242,132.57
5. Step 5: Solve for x
   x = 92,242,132.57/8,573.82
6. Step 6: Final answer
   x = 10,758.58