Finding the Fourth Proportional to 22,746.30, 31,389.42 and 12,674.70

Step by Step Solution

1. Step 1: Write the proportion equation
   22,746.30 : 31,389.42 = 12,674.70 : x
2. Step 2: Convert to fraction form
   22,746.30/31,389.42 = 12,674.70/x
3. Step 3: Cross multiply
   22,746.30x = 31,389.42 × 12,674.70
4. Step 4: Simplify right side
   22,746.30x = 397,851,481.67
5. Step 5: Solve for x
   x = 397,851,481.67/22,746.30
6. Step 6: Final answer
   x = 17,490.82