Finding the Fourth Proportional to 22,776.38, 31,432.86 and 12,706.34

Step by Step Solution

1. Step 1: Write the proportion equation
   22,776.38 : 31,432.86 = 12,706.34 : x
2. Step 2: Convert to fraction form
   22,776.38/31,432.86 = 12,706.34/x
3. Step 3: Cross multiply
   22,776.38x = 31,432.86 × 12,706.34
4. Step 4: Simplify right side
   22,776.38x = 399,396,606.33
5. Step 5: Solve for x
   x = 399,396,606.33/22,776.38
6. Step 6: Final answer
   x = 17,535.56