Finding the Fourth Proportional to 30,653.82, 42,290.01 and 19,320.30

Step by Step Solution

1. Step 1: Write the proportion equation
   30,653.82 : 42,290.01 = 19,320.30 : x
2. Step 2: Convert to fraction form
   30,653.82/42,290.01 = 19,320.30/x
3. Step 3: Cross multiply
   30,653.82x = 42,290.01 × 19,320.30
4. Step 4: Simplify right side
   30,653.82x = 817,055,680.20
5. Step 5: Solve for x
   x = 817,055,680.20/30,653.82
6. Step 6: Final answer
   x = 26,654.29