Finding the Fourth Proportional to 23,175.54, 31,979.29 and 15,105.51

Step by Step Solution

1. Step 1: Write the proportion equation
   23,175.54 : 31,979.29 = 15,105.51 : x
2. Step 2: Convert to fraction form
   23,175.54/31,979.29 = 15,105.51/x
3. Step 3: Cross multiply
   23,175.54x = 31,979.29 × 15,105.51
4. Step 4: Simplify right side
   23,175.54x = 483,063,484.89
5. Step 5: Solve for x
   x = 483,063,484.89/23,175.54
6. Step 6: Final answer
   x = 20,843.68