Finding the Fourth Proportional to 9,127.20, 13,624.78 and 8,020.03

Step by Step Solution

1. Step 1: Write the proportion equation
   9,127.20 : 13,624.78 = 8,020.03 : x
2. Step 2: Convert to fraction form
   9,127.20/13,624.78 = 8,020.03/x
3. Step 3: Cross multiply
   9,127.20x = 13,624.78 × 8,020.03
4. Step 4: Simplify right side
   9,127.20x = 109,271,144.34
5. Step 5: Solve for x
   x = 109,271,144.34/9,127.20
6. Step 6: Final answer
   x = 11,972.03