Finding the Fourth Proportional to 30,962.20, 42,725.82 and 19,783

Step by Step Solution

1. Step 1: Write the proportion equation
   30,962.20 : 42,725.82 = 19,783 : x
2. Step 2: Convert to fraction form
   30,962.20/42,725.82 = 19,783/x
3. Step 3: Cross multiply
   30,962.20x = 42,725.82 × 19,783
4. Step 4: Simplify right side
   30,962.20x = 845,244,897.06
5. Step 5: Solve for x
   x = 845,244,897.06/30,962.20
6. Step 6: Final answer
   x = 27,299.25