Finding the Fourth Proportional to 9,910.81, 13,674.77 and 5,716.63

Step by Step Solution

1. Step 1: Write the proportion equation
   9,910.81 : 13,674.77 = 5,716.63 : x
2. Step 2: Convert to fraction form
   9,910.81/13,674.77 = 5,716.63/x
3. Step 3: Cross multiply
   9,910.81x = 13,674.77 × 5,716.63
4. Step 4: Simplify right side
   9,910.81x = 78,173,532.05
5. Step 5: Solve for x
   x = 78,173,532.05/9,910.81
6. Step 6: Final answer
   x = 7,887.71