Finding the Fourth Proportional to 16,081.34, 22,172.94 and 13,839.36

Step by Step Solution

1. Step 1: Write the proportion equation
   16,081.34 : 22,172.94 = 13,839.36 : x
2. Step 2: Convert to fraction form
   16,081.34/22,172.94 = 13,839.36/x
3. Step 3: Cross multiply
   16,081.34x = 22,172.94 × 13,839.36
4. Step 4: Simplify right side
   16,081.34x = 306,859,215.77
5. Step 5: Solve for x
   x = 306,859,215.77/16,081.34
6. Step 6: Final answer
   x = 19,081.70