Finding the Fourth Proportional to 22,947.26, 31,667.71 and 12,876.43

Step by Step Solution

1. Step 1: Write the proportion equation
   22,947.26 : 31,667.71 = 12,876.43 : x
2. Step 2: Convert to fraction form
   22,947.26/31,667.71 = 12,876.43/x
3. Step 3: Cross multiply
   22,947.26x = 31,667.71 × 12,876.43
4. Step 4: Simplify right side
   22,947.26x = 407,766,939.71
5. Step 5: Solve for x
   x = 407,766,939.71/22,947.26
6. Step 6: Final answer
   x = 17,769.75