Finding the Fourth Proportional to 30,654.82, 42,291.39 and 19,321.30

Step by Step Solution

1. Step 1: Write the proportion equation
   30,654.82 : 42,291.39 = 19,321.30 : x
2. Step 2: Convert to fraction form
   30,654.82/42,291.39 = 19,321.30/x
3. Step 3: Cross multiply
   30,654.82x = 42,291.39 × 19,321.30
4. Step 4: Simplify right side
   30,654.82x = 817,124,633.61
5. Step 5: Solve for x
   x = 817,124,633.61/30,654.82
6. Step 6: Final answer
   x = 26,655.67