Finding the Fourth Proportional to 11,021.54, 16,528.71 and 5,174.42

Step by Step Solution

1. Step 1: Write the proportion equation
   11,021.54 : 16,528.71 = 5,174.42 : x
2. Step 2: Convert to fraction form
   11,021.54/16,528.71 = 5,174.42/x
3. Step 3: Cross multiply
   11,021.54x = 16,528.71 × 5,174.42
4. Step 4: Simplify right side
   11,021.54x = 85,526,487.60
5. Step 5: Solve for x
   x = 85,526,487.60/11,021.54
6. Step 6: Final answer
   x = 7,759.94