Finding the Fourth Proportional to 12,774.32, 17,628.52 and 7,109.04

Step by Step Solution

1. Step 1: Write the proportion equation
   12,774.32 : 17,628.52 = 7,109.04 : x
2. Step 2: Convert to fraction form
   12,774.32/17,628.52 = 7,109.04/x
3. Step 3: Cross multiply
   12,774.32x = 17,628.52 × 7,109.04
4. Step 4: Simplify right side
   12,774.32x = 125,321,853.82
5. Step 5: Solve for x
   x = 125,321,853.82/12,774.32
6. Step 6: Final answer
   x = 9,810.45