Finding the Fourth Proportional to 22,810.63, 31,474.83 and 12,738.70

Step by Step Solution

1. Step 1: Write the proportion equation
   22,810.63 : 31,474.83 = 12,738.70 : x
2. Step 2: Convert to fraction form
   22,810.63/31,474.83 = 12,738.70/x
3. Step 3: Cross multiply
   22,810.63x = 31,474.83 × 12,738.70
4. Step 4: Simplify right side
   22,810.63x = 400,948,416.92
5. Step 5: Solve for x
   x = 400,948,416.92/22,810.63
6. Step 6: Final answer
   x = 17,577.26