Finding the Fourth Proportional to 13,150.97, 19,719.15 and 4,381.10

Step by Step Solution

1. Step 1: Write the proportion equation
   13,150.97 : 19,719.15 = 4,381.10 : x
2. Step 2: Convert to fraction form
   13,150.97/19,719.15 = 4,381.10/x
3. Step 3: Cross multiply
   13,150.97x = 19,719.15 × 4,381.10
4. Step 4: Simplify right side
   13,150.97x = 86,391,469.47
5. Step 5: Solve for x
   x = 86,391,469.47/13,150.97
6. Step 6: Final answer
   x = 6,569.21