Finding the Fourth Proportional to 9,020.32, 12,442.56 and 5,485.96

Step by Step Solution

1. Step 1: Write the proportion equation
   9,020.32 : 12,442.56 = 5,485.96 : x
2. Step 2: Convert to fraction form
   9,020.32/12,442.56 = 5,485.96/x
3. Step 3: Cross multiply
   9,020.32x = 12,442.56 × 5,485.96
4. Step 4: Simplify right side
   9,020.32x = 68,259,386.46
5. Step 5: Solve for x
   x = 68,259,386.46/9,020.32
6. Step 6: Final answer
   x = 7,567.29