Finding the Fourth Proportional to 9,420.03, 12,983.90 and 7,150.68

Step by Step Solution

1. Step 1: Write the proportion equation
   9,420.03 : 12,983.90 = 7,150.68 : x
2. Step 2: Convert to fraction form
   9,420.03/12,983.90 = 7,150.68/x
3. Step 3: Cross multiply
   9,420.03x = 12,983.90 × 7,150.68
4. Step 4: Simplify right side
   9,420.03x = 92,843,678.30
5. Step 5: Solve for x
   x = 92,843,678.30/9,420.03
6. Step 6: Final answer
   x = 9,855.99