Finding the Fourth Proportional to 28,727.33, 43,104.04 and 12,923.69

Step by Step Solution

1. Step 1: Write the proportion equation
   28,727.33 : 43,104.04 = 12,923.69 : x
2. Step 2: Convert to fraction form
   28,727.33/43,104.04 = 12,923.69/x
3. Step 3: Cross multiply
   28,727.33x = 43,104.04 × 12,923.69
4. Step 4: Simplify right side
   28,727.33x = 557,063,002.88
5. Step 5: Solve for x
   x = 557,063,002.88/28,727.33
6. Step 6: Final answer
   x = 19,391.40