Finding the Fourth Proportional to 13,830.45, 19,087.16 and 7,863.99

Step by Step Solution

1. Step 1: Write the proportion equation
   13,830.45 : 19,087.16 = 7,863.99 : x
2. Step 2: Convert to fraction form
   13,830.45/19,087.16 = 7,863.99/x
3. Step 3: Cross multiply
   13,830.45x = 19,087.16 × 7,863.99
4. Step 4: Simplify right side
   13,830.45x = 150,101,196.05
5. Step 5: Solve for x
   x = 150,101,196.05/13,830.45
6. Step 6: Final answer
   x = 10,852.95