Finding the Fourth Proportional to 12,799.98, 19,208.61 and 4,480.06

Step by Step Solution

1. Step 1: Write the proportion equation
   12,799.98 : 19,208.61 = 4,480.06 : x
2. Step 2: Convert to fraction form
   12,799.98/19,208.61 = 4,480.06/x
3. Step 3: Cross multiply
   12,799.98x = 19,208.61 × 4,480.06
4. Step 4: Simplify right side
   12,799.98x = 86,055,725.32
5. Step 5: Solve for x
   x = 86,055,725.32/12,799.98
6. Step 6: Final answer
   x = 6,723.12