Finding the Fourth Proportional to 8,788.53, 12,127.81 and 5,253.69

Step by Step Solution

1. Step 1: Write the proportion equation
   8,788.53 : 12,127.81 = 5,253.69 : x
2. Step 2: Convert to fraction form
   8,788.53/12,127.81 = 5,253.69/x
3. Step 3: Cross multiply
   8,788.53x = 12,127.81 × 5,253.69
4. Step 4: Simplify right side
   8,788.53x = 63,715,754.12
5. Step 5: Solve for x
   x = 63,715,754.12/8,788.53
6. Step 6: Final answer
   x = 7,249.88