Finding the Fourth Proportional to 13,081.71, 17,811.23 and 13,040.19

Step by Step Solution

1. Step 1: Write the proportion equation
   13,081.71 : 17,811.23 = 13,040.19 : x
2. Step 2: Convert to fraction form
   13,081.71/17,811.23 = 13,040.19/x
3. Step 3: Cross multiply
   13,081.71x = 17,811.23 × 13,040.19
4. Step 4: Simplify right side
   13,081.71x = 232,261,823.33
5. Step 5: Solve for x
   x = 232,261,823.33/13,081.71
6. Step 6: Final answer
   x = 17,754.70