Finding the Fourth Proportional to 23,109.30, 31,894.76 and 13,040.59

Step by Step Solution

1. Step 1: Write the proportion equation
   23,109.30 : 31,894.76 = 13,040.59 : x
2. Step 2: Convert to fraction form
   23,109.30/31,894.76 = 13,040.59/x
3. Step 3: Cross multiply
   23,109.30x = 31,894.76 × 13,040.59
4. Step 4: Simplify right side
   23,109.30x = 415,926,488.31
5. Step 5: Solve for x
   x = 415,926,488.31/23,109.30
6. Step 6: Final answer
   x = 17,998.23