Finding the Fourth Proportional to 9,103.68, 12,536.64 and 7,908.12

Step by Step Solution

1. Step 1: Write the proportion equation
   9,103.68 : 12,536.64 = 7,908.12 : x
2. Step 2: Convert to fraction form
   9,103.68/12,536.64 = 7,908.12/x
3. Step 3: Cross multiply
   9,103.68x = 12,536.64 × 7,908.12
4. Step 4: Simplify right side
   9,103.68x = 99,141,253.52
5. Step 5: Solve for x
   x = 99,141,253.52/9,103.68
6. Step 6: Final answer
   x = 10,890.24