Finding the Fourth Proportional to 12,774.43, 17,629.05 and 7,109.56

Step by Step Solution

1. Step 1: Write the proportion equation
   12,774.43 : 17,629.05 = 7,109.56 : x
2. Step 2: Convert to fraction form
   12,774.43/17,629.05 = 7,109.56/x
3. Step 3: Cross multiply
   12,774.43x = 17,629.05 × 7,109.56
4. Step 4: Simplify right side
   12,774.43x = 125,334,788.72
5. Step 5: Solve for x
   x = 125,334,788.72/12,774.43
6. Step 6: Final answer
   x = 9,811.38