Finding the Fourth Proportional to 10,087.18, 13,920.82 and 5,611.02

Step by Step Solution

1. Step 1: Write the proportion equation
   10,087.18 : 13,920.82 = 5,611.02 : x
2. Step 2: Convert to fraction form
   10,087.18/13,920.82 = 5,611.02/x
3. Step 3: Cross multiply
   10,087.18x = 13,920.82 × 5,611.02
4. Step 4: Simplify right side
   10,087.18x = 78,109,929.83
5. Step 5: Solve for x
   x = 78,109,929.83/10,087.18
6. Step 6: Final answer
   x = 7,743.49