Finding the Fourth Proportional to 22,743.28, 31,384.86 and 12,671.50

Step by Step Solution

1. Step 1: Write the proportion equation
   22,743.28 : 31,384.86 = 12,671.50 : x
2. Step 2: Convert to fraction form
   22,743.28/31,384.86 = 12,671.50/x
3. Step 3: Cross multiply
   22,743.28x = 31,384.86 × 12,671.50
4. Step 4: Simplify right side
   22,743.28x = 397,693,253.49
5. Step 5: Solve for x
   x = 397,693,253.49/22,743.28
6. Step 6: Final answer
   x = 17,486.19