Finding the Fourth Proportional to 12,446.18, 17,175.03 and 7,140.50

Step by Step Solution

1. Step 1: Write the proportion equation
   12,446.18 : 17,175.03 = 7,140.50 : x
2. Step 2: Convert to fraction form
   12,446.18/17,175.03 = 7,140.50/x
3. Step 3: Cross multiply
   12,446.18x = 17,175.03 × 7,140.50
4. Step 4: Simplify right side
   12,446.18x = 122,638,301.72
5. Step 5: Solve for x
   x = 122,638,301.72/12,446.18
6. Step 6: Final answer
   x = 9,853.49