Finding the Fourth Proportional to 12,120.21, 16,707.83 and 7,401.33

Step by Step Solution

1. Step 1: Write the proportion equation
   12,120.21 : 16,707.83 = 7,401.33 : x
2. Step 2: Convert to fraction form
   12,120.21/16,707.83 = 7,401.33/x
3. Step 3: Cross multiply
   12,120.21x = 16,707.83 × 7,401.33
4. Step 4: Simplify right side
   12,120.21x = 123,660,126.41
5. Step 5: Solve for x
   x = 123,660,126.41/12,120.21
6. Step 6: Final answer
   x = 10,202.80