Finding the Fourth Proportional to 22,810.83, 31,477.12 and 12,738.67

Step by Step Solution

1. Step 1: Write the proportion equation
   22,810.83 : 31,477.12 = 12,738.67 : x
2. Step 2: Convert to fraction form
   22,810.83/31,477.12 = 12,738.67/x
3. Step 3: Cross multiply
   22,810.83x = 31,477.12 × 12,738.67
4. Step 4: Simplify right side
   22,810.83x = 400,976,644.23
5. Step 5: Solve for x
   x = 400,976,644.23/22,810.83
6. Step 6: Final answer
   x = 17,578.35