Finding the Fourth Proportional to 9,262.31, 12,783.78 and 7,020.27

Step by Step Solution

1. Step 1: Write the proportion equation
   9,262.31 : 12,783.78 = 7,020.27 : x
2. Step 2: Convert to fraction form
   9,262.31/12,783.78 = 7,020.27/x
3. Step 3: Cross multiply
   9,262.31x = 12,783.78 × 7,020.27
4. Step 4: Simplify right side
   9,262.31x = 89,745,587.22
5. Step 5: Solve for x
   x = 89,745,587.22/9,262.31
6. Step 6: Final answer
   x = 9,689.34