Finding the Fourth Proportional to 8,788.16, 12,131.16 and 5,764.43

Step by Step Solution

1. Step 1: Write the proportion equation
   8,788.16 : 12,131.16 = 5,764.43 : x
2. Step 2: Convert to fraction form
   8,788.16/12,131.16 = 5,764.43/x
3. Step 3: Cross multiply
   8,788.16x = 12,131.16 × 5,764.43
4. Step 4: Simplify right side
   8,788.16x = 69,929,222.64
5. Step 5: Solve for x
   x = 69,929,222.64/8,788.16
6. Step 6: Final answer
   x = 7,957.21