Finding the Fourth Proportional to 12,627.30, 17,424.77 and 7,321.22

Step by Step Solution

1. Step 1: Write the proportion equation
   12,627.30 : 17,424.77 = 7,321.22 : x
2. Step 2: Convert to fraction form
   12,627.30/17,424.77 = 7,321.22/x
3. Step 3: Cross multiply
   12,627.30x = 17,424.77 × 7,321.22
4. Step 4: Simplify right side
   12,627.30x = 127,570,574.62
5. Step 5: Solve for x
   x = 127,570,574.62/12,627.30
6. Step 6: Final answer
   x = 10,102.76