Finding the Fourth Proportional to 30,566.86, 42,200.67 and 19,974.22

Step by Step Solution

1. Step 1: Write the proportion equation
   30,566.86 : 42,200.67 = 19,974.22 : x
2. Step 2: Convert to fraction form
   30,566.86/42,200.67 = 19,974.22/x
3. Step 3: Cross multiply
   30,566.86x = 42,200.67 × 19,974.22
4. Step 4: Simplify right side
   30,566.86x = 842,925,466.73
5. Step 5: Solve for x
   x = 842,925,466.73/30,566.86
6. Step 6: Final answer
   x = 27,576.45