Finding the Fourth Proportional to 30,760.38, 42,448.32 and 19,435.95

Step by Step Solution

1. Step 1: Write the proportion equation
   30,760.38 : 42,448.32 = 19,435.95 : x
2. Step 2: Convert to fraction form
   30,760.38/42,448.32 = 19,435.95/x
3. Step 3: Cross multiply
   30,760.38x = 42,448.32 × 19,435.95
4. Step 4: Simplify right side
   30,760.38x = 825,023,425.10
5. Step 5: Solve for x
   x = 825,023,425.10/30,760.38
6. Step 6: Final answer
   x = 26,820.98