Finding the Fourth Proportional to 9,131.92, 13,689.36 and 4,965.76

Step by Step Solution

1. Step 1: Write the proportion equation
   9,131.92 : 13,689.36 = 4,965.76 : x
2. Step 2: Convert to fraction form
   9,131.92/13,689.36 = 4,965.76/x
3. Step 3: Cross multiply
   9,131.92x = 13,689.36 × 4,965.76
4. Step 4: Simplify right side
   9,131.92x = 67,978,076.31
5. Step 5: Solve for x
   x = 67,978,076.31/9,131.92
6. Step 6: Final answer
   x = 7,444.01