Finding the Fourth Proportional to 9,020.54, 12,448.42 and 4,987.30

Step by Step Solution

1. Step 1: Write the proportion equation
   9,020.54 : 12,448.42 = 4,987.30 : x
2. Step 2: Convert to fraction form
   9,020.54/12,448.42 = 4,987.30/x
3. Step 3: Cross multiply
   9,020.54x = 12,448.42 × 4,987.30
4. Step 4: Simplify right side
   9,020.54x = 62,084,036.19
5. Step 5: Solve for x
   x = 62,084,036.19/9,020.54
6. Step 6: Final answer
   x = 6,882.52