Finding the Fourth Proportional to 22,288.77, 30,758.48 and 12,857.33

Step by Step Solution

1. Step 1: Write the proportion equation
   22,288.77 : 30,758.48 = 12,857.33 : x
2. Step 2: Convert to fraction form
   22,288.77/30,758.48 = 12,857.33/x
3. Step 3: Cross multiply
   22,288.77x = 30,758.48 × 12,857.33
4. Step 4: Simplify right side
   22,288.77x = 395,472,060.81
5. Step 5: Solve for x
   x = 395,472,060.81/22,288.77
6. Step 6: Final answer
   x = 17,743.11