Finding the Fourth Proportional to 22,810.76, 31,477.06 and 12,738.42

Step by Step Solution

1. Step 1: Write the proportion equation
   22,810.76 : 31,477.06 = 12,738.42 : x
2. Step 2: Convert to fraction form
   22,810.76/31,477.06 = 12,738.42/x
3. Step 3: Cross multiply
   22,810.76x = 31,477.06 × 12,738.42
4. Step 4: Simplify right side
   22,810.76x = 400,968,010.65
5. Step 5: Solve for x
   x = 400,968,010.65/22,810.76
6. Step 6: Final answer
   x = 17,578.02