Finding the Fourth Proportional to 10,087.62, 13,919.42 and 5,611.43

Step by Step Solution

1. Step 1: Write the proportion equation
   10,087.62 : 13,919.42 = 5,611.43 : x
2. Step 2: Convert to fraction form
   10,087.62/13,919.42 = 5,611.43/x
3. Step 3: Cross multiply
   10,087.62x = 13,919.42 × 5,611.43
4. Step 4: Simplify right side
   10,087.62x = 78,107,850.97
5. Step 5: Solve for x
   x = 78,107,850.97/10,087.62
6. Step 6: Final answer
   x = 7,742.94