Finding the Fourth Proportional to 8,757.72, 12,086.82 and 5,623.02

Step by Step Solution

1. Step 1: Write the proportion equation
   8,757.72 : 12,086.82 = 5,623.02 : x
2. Step 2: Convert to fraction form
   8,757.72/12,086.82 = 5,623.02/x
3. Step 3: Cross multiply
   8,757.72x = 12,086.82 × 5,623.02
4. Step 4: Simplify right side
   8,757.72x = 67,964,430.60
5. Step 5: Solve for x
   x = 67,964,430.60/8,757.72
6. Step 6: Final answer
   x = 7,760.52