Finding the Fourth Proportional to 9,021.28, 12,449.60 and 5,042.72

Step by Step Solution

1. Step 1: Write the proportion equation
   9,021.28 : 12,449.60 = 5,042.72 : x
2. Step 2: Convert to fraction form
   9,021.28/12,449.60 = 5,042.72/x
3. Step 3: Cross multiply
   9,021.28x = 12,449.60 × 5,042.72
4. Step 4: Simplify right side
   9,021.28x = 62,779,846.91
5. Step 5: Solve for x
   x = 62,779,846.91/9,021.28
6. Step 6: Final answer
   x = 6,959.08