Finding the Fourth Proportional to 30,798.43, 42,508.43 and 19,460.72

Step by Step Solution

1. Step 1: Write the proportion equation
   30,798.43 : 42,508.43 = 19,460.72 : x
2. Step 2: Convert to fraction form
   30,798.43/42,508.43 = 19,460.72/x
3. Step 3: Cross multiply
   30,798.43x = 42,508.43 × 19,460.72
4. Step 4: Simplify right side
   30,798.43x = 827,244,735.81
5. Step 5: Solve for x
   x = 827,244,735.81/30,798.43
6. Step 6: Final answer
   x = 26,859.97