Finding the Fourth Proportional to 12,354.56, 17,051.28 and 7,049.60

Step by Step Solution

1. Step 1: Write the proportion equation
   12,354.56 : 17,051.28 = 7,049.60 : x
2. Step 2: Convert to fraction form
   12,354.56/17,051.28 = 7,049.60/x
3. Step 3: Cross multiply
   12,354.56x = 17,051.28 × 7,049.60
4. Step 4: Simplify right side
   12,354.56x = 120,204,703.49
5. Step 5: Solve for x
   x = 120,204,703.49/12,354.56
6. Step 6: Final answer
   x = 9,729.58