Finding the Fourth Proportional to 9,021.27, 12,449.33 and 5,042.40

Step by Step Solution

1. Step 1: Write the proportion equation
   9,021.27 : 12,449.33 = 5,042.40 : x
2. Step 2: Convert to fraction form
   9,021.27/12,449.33 = 5,042.40/x
3. Step 3: Cross multiply
   9,021.27x = 12,449.33 × 5,042.40
4. Step 4: Simplify right side
   9,021.27x = 62,774,518.63
5. Step 5: Solve for x
   x = 62,774,518.63/9,021.27
6. Step 6: Final answer
   x = 6,958.50