Finding the Fourth Proportional to 28,767.57, 39,696.71 and 16,019.79

Step by Step Solution

1. Step 1: Write the proportion equation
   28,767.57 : 39,696.71 = 16,019.79 : x
2. Step 2: Convert to fraction form
   28,767.57/39,696.71 = 16,019.79/x
3. Step 3: Cross multiply
   28,767.57x = 39,696.71 × 16,019.79
4. Step 4: Simplify right side
   28,767.57x = 635,932,957.89
5. Step 5: Solve for x
   x = 635,932,957.89/28,767.57
6. Step 6: Final answer
   x = 22,105.90