Finding the Fourth Proportional to 40,015.74, 55,221.51 and 22,111.98

Step by Step Solution

1. Step 1: Write the proportion equation
   40,015.74 : 55,221.51 = 22,111.98 : x
2. Step 2: Convert to fraction form
   40,015.74/55,221.51 = 22,111.98/x
3. Step 3: Cross multiply
   40,015.74x = 55,221.51 × 22,111.98
4. Step 4: Simplify right side
   40,015.74x = 1,221,056,924.69
5. Step 5: Solve for x
   x = 1,221,056,924.69/40,015.74
6. Step 6: Final answer
   x = 30,514.42