Finding the Fourth Proportional to 40,212.90, 55,493.82 and 22,308.12

Step by Step Solution

1. Step 1: Write the proportion equation
   40,212.90 : 55,493.82 = 22,308.12 : x
2. Step 2: Convert to fraction form
   40,212.90/55,493.82 = 22,308.12/x
3. Step 3: Cross multiply
   40,212.90x = 55,493.82 × 22,308.12
4. Step 4: Simplify right side
   40,212.90x = 1,237,962,795.82
5. Step 5: Solve for x
   x = 1,237,962,795.82/40,212.90
6. Step 6: Final answer
   x = 30,785.22