Finding the Fourth Proportional to 12,422.48, 17,144.28 and 7,118

Step by Step Solution

1. Step 1: Write the proportion equation
   12,422.48 : 17,144.28 = 7,118 : x
2. Step 2: Convert to fraction form
   12,422.48/17,144.28 = 7,118/x
3. Step 3: Cross multiply
   12,422.48x = 17,144.28 × 7,118
4. Step 4: Simplify right side
   12,422.48x = 122,032,985.04
5. Step 5: Solve for x
   x = 122,032,985.04/12,422.48
6. Step 6: Final answer
   x = 9,823.56