Finding the Fourth Proportional to 8,697.69, 12,002.81 and 4,920.77

Step by Step Solution

1. Step 1: Write the proportion equation
   8,697.69 : 12,002.81 = 4,920.77 : x
2. Step 2: Convert to fraction form
   8,697.69/12,002.81 = 4,920.77/x
3. Step 3: Cross multiply
   8,697.69x = 12,002.81 × 4,920.77
4. Step 4: Simplify right side
   8,697.69x = 59,063,072.77
5. Step 5: Solve for x
   x = 59,063,072.77/8,697.69
6. Step 6: Final answer
   x = 6,790.66