Finding the Fourth Proportional to 22,957.37, 31,678.73 and 12,886.92

Step by Step Solution

1. Step 1: Write the proportion equation
   22,957.37 : 31,678.73 = 12,886.92 : x
2. Step 2: Convert to fraction form
   22,957.37/31,678.73 = 12,886.92/x
3. Step 3: Cross multiply
   22,957.37x = 31,678.73 × 12,886.92
4. Step 4: Simplify right side
   22,957.37x = 408,241,100.82
5. Step 5: Solve for x
   x = 408,241,100.82/22,957.37
6. Step 6: Final answer
   x = 17,782.58