Finding the Fourth Proportional to 13,181.85, 19,769.69 and 3,819.38

Step by Step Solution

1. Step 1: Write the proportion equation
   13,181.85 : 19,769.69 = 3,819.38 : x
2. Step 2: Convert to fraction form
   13,181.85/19,769.69 = 3,819.38/x
3. Step 3: Cross multiply
   13,181.85x = 19,769.69 × 3,819.38
4. Step 4: Simplify right side
   13,181.85x = 75,507,840.65
5. Step 5: Solve for x
   x = 75,507,840.65/13,181.85
6. Step 6: Final answer
   x = 5,728.17