Finding the Fourth Proportional to 12,796.88, 19,202.61 and 4,478.69

Step by Step Solution

1. Step 1: Write the proportion equation
   12,796.88 : 19,202.61 = 4,478.69 : x
2. Step 2: Convert to fraction form
   12,796.88/19,202.61 = 4,478.69/x
3. Step 3: Cross multiply
   12,796.88x = 19,202.61 × 4,478.69
4. Step 4: Simplify right side
   12,796.88x = 86,002,441.37
5. Step 5: Solve for x
   x = 86,002,441.37/12,796.88
6. Step 6: Final answer
   x = 6,720.58