Finding the Fourth Proportional to 31,019.18, 42,821.34 and 19,092.74

Step by Step Solution

1. Step 1: Write the proportion equation
   31,019.18 : 42,821.34 = 19,092.74 : x
2. Step 2: Convert to fraction form
   31,019.18/42,821.34 = 19,092.74/x
3. Step 3: Cross multiply
   31,019.18x = 42,821.34 × 19,092.74
4. Step 4: Simplify right side
   31,019.18x = 817,576,711.07
5. Step 5: Solve for x
   x = 817,576,711.07/31,019.18
6. Step 6: Final answer
   x = 26,357.13