Finding the Fourth Proportional to 13,830.59, 19,087.83 and 7,863.15

Step by Step Solution

1. Step 1: Write the proportion equation
   13,830.59 : 19,087.83 = 7,863.15 : x
2. Step 2: Convert to fraction form
   13,830.59/19,087.83 = 7,863.15/x
3. Step 3: Cross multiply
   13,830.59x = 19,087.83 × 7,863.15
4. Step 4: Simplify right side
   13,830.59x = 150,090,542.04
5. Step 5: Solve for x
   x = 150,090,542.04/13,830.59
6. Step 6: Final answer
   x = 10,852.07