Finding the Fourth Proportional to 23,078.81, 34,632.79 and 13,237.31

Step by Step Solution

1. Step 1: Write the proportion equation
   23,078.81 : 34,632.79 = 13,237.31 : x
2. Step 2: Convert to fraction form
   23,078.81/34,632.79 = 13,237.31/x
3. Step 3: Cross multiply
   23,078.81x = 34,632.79 × 13,237.31
4. Step 4: Simplify right side
   23,078.81x = 458,444,977.39
5. Step 5: Solve for x
   x = 458,444,977.39/23,078.81
6. Step 6: Final answer
   x = 19,864.32