Finding the Fourth Proportional to 8,788.23, 12,126.55 and 5,250.69

Step by Step Solution

1. Step 1: Write the proportion equation
   8,788.23 : 12,126.55 = 5,250.69 : x
2. Step 2: Convert to fraction form
   8,788.23/12,126.55 = 5,250.69/x
3. Step 3: Cross multiply
   8,788.23x = 12,126.55 × 5,250.69
4. Step 4: Simplify right side
   8,788.23x = 63,672,754.82
5. Step 5: Solve for x
   x = 63,672,754.82/8,788.23
6. Step 6: Final answer
   x = 7,245.23