Finding the Fourth Proportional to 23,109.54, 31,891 and 13,038.08

Step by Step Solution

1. Step 1: Write the proportion equation
   23,109.54 : 31,891 = 13,038.08 : x
2. Step 2: Convert to fraction form
   23,109.54/31,891 = 13,038.08/x
3. Step 3: Cross multiply
   23,109.54x = 31,891 × 13,038.08
4. Step 4: Simplify right side
   23,109.54x = 415,797,409.28
5. Step 5: Solve for x
   x = 415,797,409.28/23,109.54
6. Step 6: Final answer
   x = 17,992.46