Finding the Fourth Proportional to 30,783.17, 42,372.32 and 22,271.49

Step by Step Solution

1. Step 1: Write the proportion equation
   30,783.17 : 42,372.32 = 22,271.49 : x
2. Step 2: Convert to fraction form
   30,783.17/42,372.32 = 22,271.49/x
3. Step 3: Cross multiply
   30,783.17x = 42,372.32 × 22,271.49
4. Step 4: Simplify right side
   30,783.17x = 943,694,589.80
5. Step 5: Solve for x
   x = 943,694,589.80/30,783.17
6. Step 6: Final answer
   x = 30,656.18