Finding the Fourth Proportional to 12,629.18, 17,428.32 and 7,327.12

Step by Step Solution

1. Step 1: Write the proportion equation
   12,629.18 : 17,428.32 = 7,327.12 : x
2. Step 2: Convert to fraction form
   12,629.18/17,428.32 = 7,327.12/x
3. Step 3: Cross multiply
   12,629.18x = 17,428.32 × 7,327.12
4. Step 4: Simplify right side
   12,629.18x = 127,699,392.04
5. Step 5: Solve for x
   x = 127,699,392.04/12,629.18
6. Step 6: Final answer
   x = 10,111.46