Finding the Fourth Proportional to 23,112.24, 31,894.86 and 13,040.70

Step by Step Solution

1. Step 1: Write the proportion equation
   23,112.24 : 31,894.86 = 13,040.70 : x
2. Step 2: Convert to fraction form
   23,112.24/31,894.86 = 13,040.70/x
3. Step 3: Cross multiply
   23,112.24x = 31,894.86 × 13,040.70
4. Step 4: Simplify right side
   23,112.24x = 415,931,300.80
5. Step 5: Solve for x
   x = 415,931,300.80/23,112.24
6. Step 6: Final answer
   x = 17,996.15