Finding the Fourth Proportional to 10,087.17, 13,920.09 and 5,610.82

Step by Step Solution

1. Step 1: Write the proportion equation
   10,087.17 : 13,920.09 = 5,610.82 : x
2. Step 2: Convert to fraction form
   10,087.17/13,920.09 = 5,610.82/x
3. Step 3: Cross multiply
   10,087.17x = 13,920.09 × 5,610.82
4. Step 4: Simplify right side
   10,087.17x = 78,103,091.32
5. Step 5: Solve for x
   x = 78,103,091.32/10,087.17
6. Step 6: Final answer
   x = 7,742.82