Finding the Fourth Proportional to 8,758.49, 12,099.88 and 5,740.77

Step by Step Solution

1. Step 1: Write the proportion equation
   8,758.49 : 12,099.88 = 5,740.77 : x
2. Step 2: Convert to fraction form
   8,758.49/12,099.88 = 5,740.77/x
3. Step 3: Cross multiply
   8,758.49x = 12,099.88 × 5,740.77
4. Step 4: Simplify right side
   8,758.49x = 69,462,629.61
5. Step 5: Solve for x
   x = 69,462,629.61/8,758.49
6. Step 6: Final answer
   x = 7,930.89