Finding the Fourth Proportional to 12,736.28, 19,109.46 and 4,947.32

Step by Step Solution

1. Step 1: Write the proportion equation
   12,736.28 : 19,109.46 = 4,947.32 : x
2. Step 2: Convert to fraction form
   12,736.28/19,109.46 = 4,947.32/x
3. Step 3: Cross multiply
   12,736.28x = 19,109.46 × 4,947.32
4. Step 4: Simplify right side
   12,736.28x = 94,540,613.65
5. Step 5: Solve for x
   x = 94,540,613.65/12,736.28
6. Step 6: Final answer
   x = 7,422.94