Finding the Fourth Proportional to 23,005.74, 31,745.72 and 13,447.86

Step by Step Solution

1. Step 1: Write the proportion equation
   23,005.74 : 31,745.72 = 13,447.86 : x
2. Step 2: Convert to fraction form
   23,005.74/31,745.72 = 13,447.86/x
3. Step 3: Cross multiply
   23,005.74x = 31,745.72 × 13,447.86
4. Step 4: Simplify right side
   23,005.74x = 426,911,998.16
5. Step 5: Solve for x
   x = 426,911,998.16/23,005.74
6. Step 6: Final answer
   x = 18,556.76