Finding the Fourth Proportional to 12,422.70, 17,143.29 and 7,118.01

Step by Step Solution

1. Step 1: Write the proportion equation
   12,422.70 : 17,143.29 = 7,118.01 : x
2. Step 2: Convert to fraction form
   12,422.70/17,143.29 = 7,118.01/x
3. Step 3: Cross multiply
   12,422.70x = 17,143.29 × 7,118.01
4. Step 4: Simplify right side
   12,422.70x = 122,026,109.65
5. Step 5: Solve for x
   x = 122,026,109.65/12,422.70
6. Step 6: Final answer
   x = 9,822.83