Finding the Fourth Proportional to 8,790.88, 12,144.59 and 5,773.17

Step by Step Solution

1. Step 1: Write the proportion equation
   8,790.88 : 12,144.59 = 5,773.17 : x
2. Step 2: Convert to fraction form
   8,790.88/12,144.59 = 5,773.17/x
3. Step 3: Cross multiply
   8,790.88x = 12,144.59 × 5,773.17
4. Step 4: Simplify right side
   8,790.88x = 70,112,782.65
5. Step 5: Solve for x
   x = 70,112,782.65/8,790.88
6. Step 6: Final answer
   x = 7,975.63