Finding the Fourth Proportional to 12,204.34, 16,839.16 and 7,168.30

Step by Step Solution

1. Step 1: Write the proportion equation
   12,204.34 : 16,839.16 = 7,168.30 : x
2. Step 2: Convert to fraction form
   12,204.34/16,839.16 = 7,168.30/x
3. Step 3: Cross multiply
   12,204.34x = 16,839.16 × 7,168.30
4. Step 4: Simplify right side
   12,204.34x = 120,708,150.63
5. Step 5: Solve for x
   x = 120,708,150.63/12,204.34
6. Step 6: Final answer
   x = 9,890.59