Finding the Fourth Proportional to 10,863.72, 16,298.84 and 7,707.24

Step by Step Solution

1. Step 1: Write the proportion equation
   10,863.72 : 16,298.84 = 7,707.24 : x
2. Step 2: Convert to fraction form
   10,863.72/16,298.84 = 7,707.24/x
3. Step 3: Cross multiply
   10,863.72x = 16,298.84 × 7,707.24
4. Step 4: Simplify right side
   10,863.72x = 125,619,071.60
5. Step 5: Solve for x
   x = 125,619,071.60/10,863.72
6. Step 6: Final answer
   x = 11,563.17