Finding the Fourth Proportional to 30,984.59, 42,744.78 and 19,043.57

Step by Step Solution

1. Step 1: Write the proportion equation
   30,984.59 : 42,744.78 = 19,043.57 : x
2. Step 2: Convert to fraction form
   30,984.59/42,744.78 = 19,043.57/x
3. Step 3: Cross multiply
   30,984.59x = 42,744.78 × 19,043.57
4. Step 4: Simplify right side
   30,984.59x = 814,013,316.93
5. Step 5: Solve for x
   x = 814,013,316.93/30,984.59
6. Step 6: Final answer
   x = 26,271.55