Finding the Fourth Proportional to 12,446.02, 17,174.28 and 7,408.72

Step by Step Solution

1. Step 1: Write the proportion equation
   12,446.02 : 17,174.28 = 7,408.72 : x
2. Step 2: Convert to fraction form
   12,446.02/17,174.28 = 7,408.72/x
3. Step 3: Cross multiply
   12,446.02x = 17,174.28 × 7,408.72
4. Step 4: Simplify right side
   12,446.02x = 127,239,431.72
5. Step 5: Solve for x
   x = 127,239,431.72/12,446.02
6. Step 6: Final answer
   x = 10,223.30