Finding the Fourth Proportional to 22,714.23, 31,345.39 and 12,642.51

Step by Step Solution

1. Step 1: Write the proportion equation
   22,714.23 : 31,345.39 = 12,642.51 : x
2. Step 2: Convert to fraction form
   22,714.23/31,345.39 = 12,642.51/x
3. Step 3: Cross multiply
   22,714.23x = 31,345.39 × 12,642.51
4. Step 4: Simplify right side
   22,714.23x = 396,284,406.53
5. Step 5: Solve for x
   x = 396,284,406.53/22,714.23
6. Step 6: Final answer
   x = 17,446.53