Finding the Fourth Proportional to 12,797.57, 17,653.89 and 8,811.76

Step by Step Solution

1. Step 1: Write the proportion equation
   12,797.57 : 17,653.89 = 8,811.76 : x
2. Step 2: Convert to fraction form
   12,797.57/17,653.89 = 8,811.76/x
3. Step 3: Cross multiply
   12,797.57x = 17,653.89 × 8,811.76
4. Step 4: Simplify right side
   12,797.57x = 155,561,841.75
5. Step 5: Solve for x
   x = 155,561,841.75/12,797.57
6. Step 6: Final answer
   x = 12,155.58