Finding the Fourth Proportional to 31,020.24, 42,822.78 and 19,093.80

Step by Step Solution

1. Step 1: Write the proportion equation
   31,020.24 : 42,822.78 = 19,093.80 : x
2. Step 2: Convert to fraction form
   31,020.24/42,822.78 = 19,093.80/x
3. Step 3: Cross multiply
   31,020.24x = 42,822.78 × 19,093.80
4. Step 4: Simplify right side
   31,020.24x = 817,649,596.76
5. Step 5: Solve for x
   x = 817,649,596.76/31,020.24
6. Step 6: Final answer
   x = 26,358.58