Finding the Fourth Proportional to 13,828.37, 19,084.79 and 7,860.94

Step by Step Solution

1. Step 1: Write the proportion equation
   13,828.37 : 19,084.79 = 7,860.94 : x
2. Step 2: Convert to fraction form
   13,828.37/19,084.79 = 7,860.94/x
3. Step 3: Cross multiply
   13,828.37x = 19,084.79 × 7,860.94
4. Step 4: Simplify right side
   13,828.37x = 150,024,389.10
5. Step 5: Solve for x
   x = 150,024,389.10/13,828.37
6. Step 6: Final answer
   x = 10,849.03