Finding the Fourth Proportional to 9,908.34, 13,673.43 and 5,716.50

Step by Step Solution

1. Step 1: Write the proportion equation
   9,908.34 : 13,673.43 = 5,716.50 : x
2. Step 2: Convert to fraction form
   9,908.34/13,673.43 = 5,716.50/x
3. Step 3: Cross multiply
   9,908.34x = 13,673.43 × 5,716.50
4. Step 4: Simplify right side
   9,908.34x = 78,164,162.60
5. Step 5: Solve for x
   x = 78,164,162.60/9,908.34
6. Step 6: Final answer
   x = 7,888.72