Finding the Fourth Proportional to 9,867.83, 13,617.59 and 5,618.67

Step by Step Solution

1. Step 1: Write the proportion equation
   9,867.83 : 13,617.59 = 5,618.67 : x
2. Step 2: Convert to fraction form
   9,867.83/13,617.59 = 5,618.67/x
3. Step 3: Cross multiply
   9,867.83x = 13,617.59 × 5,618.67
4. Step 4: Simplify right side
   9,867.83x = 76,512,758.45
5. Step 5: Solve for x
   x = 76,512,758.45/9,867.83
6. Step 6: Final answer
   x = 7,753.76