Finding the Fourth Proportional to 13,300.67, 19,949.48 and 3,439.19

Step by Step Solution

1. Step 1: Write the proportion equation
   13,300.67 : 19,949.48 = 3,439.19 : x
2. Step 2: Convert to fraction form
   13,300.67/19,949.48 = 3,439.19/x
3. Step 3: Cross multiply
   13,300.67x = 19,949.48 × 3,439.19
4. Step 4: Simplify right side
   13,300.67x = 68,610,034.93
5. Step 5: Solve for x
   x = 68,610,034.93/13,300.67
6. Step 6: Final answer
   x = 5,158.39