Finding the Fourth Proportional to 8,760.57, 12,089.55 and 4,781.67

Step by Step Solution

1. Step 1: Write the proportion equation
   8,760.57 : 12,089.55 = 4,781.67 : x
2. Step 2: Convert to fraction form
   8,760.57/12,089.55 = 4,781.67/x
3. Step 3: Cross multiply
   8,760.57x = 12,089.55 × 4,781.67
4. Step 4: Simplify right side
   8,760.57x = 57,808,238.55
5. Step 5: Solve for x
   x = 57,808,238.55/8,760.57
6. Step 6: Final answer
   x = 6,598.68