Finding the Fourth Proportional to 22,777.46, 31,432.96 and 12,706.56

Step by Step Solution

1. Step 1: Write the proportion equation
   22,777.46 : 31,432.96 = 12,706.56 : x
2. Step 2: Convert to fraction form
   22,777.46/31,432.96 = 12,706.56/x
3. Step 3: Cross multiply
   22,777.46x = 31,432.96 × 12,706.56
4. Step 4: Simplify right side
   22,777.46x = 399,404,792.22
5. Step 5: Solve for x
   x = 399,404,792.22/22,777.46
6. Step 6: Final answer
   x = 17,535.09