Finding the Fourth Proportional to 23,078.78, 31,847.55 and 13,009.58

Step by Step Solution

1. Step 1: Write the proportion equation
   23,078.78 : 31,847.55 = 13,009.58 : x
2. Step 2: Convert to fraction form
   23,078.78/31,847.55 = 13,009.58/x
3. Step 3: Cross multiply
   23,078.78x = 31,847.55 × 13,009.58
4. Step 4: Simplify right side
   23,078.78x = 414,323,249.53
5. Step 5: Solve for x
   x = 414,323,249.53/23,078.78
6. Step 6: Final answer
   x = 17,952.56