Finding the Fourth Proportional to 20,258.91, 30,385.53 and 5,469.12

Step by Step Solution

1. Step 1: Write the proportion equation
   20,258.91 : 30,385.53 = 5,469.12 : x
2. Step 2: Convert to fraction form
   20,258.91/30,385.53 = 5,469.12/x
3. Step 3: Cross multiply
   20,258.91x = 30,385.53 × 5,469.12
4. Step 4: Simplify right side
   20,258.91x = 166,182,109.83
5. Step 5: Solve for x
   x = 166,182,109.83/20,258.91
6. Step 6: Final answer
   x = 8,202.91