Finding the Fourth Proportional to 13,179.07, 19,767.89 and 3,318.33

Step by Step Solution

1. Step 1: Write the proportion equation
   13,179.07 : 19,767.89 = 3,318.33 : x
2. Step 2: Convert to fraction form
   13,179.07/19,767.89 = 3,318.33/x
3. Step 3: Cross multiply
   13,179.07x = 19,767.89 × 3,318.33
4. Step 4: Simplify right side
   13,179.07x = 65,596,382.42
5. Step 5: Solve for x
   x = 65,596,382.42/13,179.07
6. Step 6: Final answer
   x = 4,977.31