Finding the Fourth Proportional to 9,162.51, 12,635.92 and 7,749.16

Step by Step Solution

1. Step 1: Write the proportion equation
   9,162.51 : 12,635.92 = 7,749.16 : x
2. Step 2: Convert to fraction form
   9,162.51/12,635.92 = 7,749.16/x
3. Step 3: Cross multiply
   9,162.51x = 12,635.92 × 7,749.16
4. Step 4: Simplify right side
   9,162.51x = 97,917,746.45
5. Step 5: Solve for x
   x = 97,917,746.45/9,162.51
6. Step 6: Final answer
   x = 10,686.78