Finding the Fourth Proportional to 12,773.42, 17,628.42 and 7,109.30

Step by Step Solution

1. Step 1: Write the proportion equation
   12,773.42 : 17,628.42 = 7,109.30 : x
2. Step 2: Convert to fraction form
   12,773.42/17,628.42 = 7,109.30/x
3. Step 3: Cross multiply
   12,773.42x = 17,628.42 × 7,109.30
4. Step 4: Simplify right side
   12,773.42x = 125,325,726.31
5. Step 5: Solve for x
   x = 125,325,726.31/12,773.42
6. Step 6: Final answer
   x = 9,811.45