Finding the Fourth Proportional to 13,180.24, 19,769.79 and 3,820.06

Step by Step Solution

1. Step 1: Write the proportion equation
   13,180.24 : 19,769.79 = 3,820.06 : x
2. Step 2: Convert to fraction form
   13,180.24/19,769.79 = 3,820.06/x
3. Step 3: Cross multiply
   13,180.24x = 19,769.79 × 3,820.06
4. Step 4: Simplify right side
   13,180.24x = 75,521,666.04
5. Step 5: Solve for x
   x = 75,521,666.04/13,180.24
6. Step 6: Final answer
   x = 5,729.92