Finding the Fourth Proportional to 12,443.52, 17,173.41 and 7,140.06

Step by Step Solution

1. Step 1: Write the proportion equation
   12,443.52 : 17,173.41 = 7,140.06 : x
2. Step 2: Convert to fraction form
   12,443.52/17,173.41 = 7,140.06/x
3. Step 3: Cross multiply
   12,443.52x = 17,173.41 × 7,140.06
4. Step 4: Simplify right side
   12,443.52x = 122,619,177.80
5. Step 5: Solve for x
   x = 122,619,177.80/12,443.52
6. Step 6: Final answer
   x = 9,854.06