Finding the Fourth Proportional to 10,087.41, 13,920.18 and 5,610.81

Step by Step Solution

1. Step 1: Write the proportion equation
   10,087.41 : 13,920.18 = 5,610.81 : x
2. Step 2: Convert to fraction form
   10,087.41/13,920.18 = 5,610.81/x
3. Step 3: Cross multiply
   10,087.41x = 13,920.18 × 5,610.81
4. Step 4: Simplify right side
   10,087.41x = 78,103,485.15
5. Step 5: Solve for x
   x = 78,103,485.15/10,087.41
6. Step 6: Final answer
   x = 7,742.67