Finding the Fourth Proportional to 13,144.43, 19,719.48 and 3,784.39

Step by Step Solution

1. Step 1: Write the proportion equation
   13,144.43 : 19,719.48 = 3,784.39 : x
2. Step 2: Convert to fraction form
   13,144.43/19,719.48 = 3,784.39/x
3. Step 3: Cross multiply
   13,144.43x = 19,719.48 × 3,784.39
4. Step 4: Simplify right side
   13,144.43x = 74,626,104.32
5. Step 5: Solve for x
   x = 74,626,104.32/13,144.43
6. Step 6: Final answer
   x = 5,677.39