Finding the Fourth Proportional to 13,855.39, 19,119.72 and 7,887.04

Step by Step Solution

1. Step 1: Write the proportion equation
   13,855.39 : 19,119.72 = 7,887.04 : x
2. Step 2: Convert to fraction form
   13,855.39/19,119.72 = 7,887.04/x
3. Step 3: Cross multiply
   13,855.39x = 19,119.72 × 7,887.04
4. Step 4: Simplify right side
   13,855.39x = 150,797,996.43
5. Step 5: Solve for x
   x = 150,797,996.43/13,855.39
6. Step 6: Final answer
   x = 10,883.71