Finding the Fourth Proportional to 8,665.62, 11,958.59 and 4,686.76

Step by Step Solution

1. Step 1: Write the proportion equation
   8,665.62 : 11,958.59 = 4,686.76 : x
2. Step 2: Convert to fraction form
   8,665.62/11,958.59 = 4,686.76/x
3. Step 3: Cross multiply
   8,665.62x = 11,958.59 × 4,686.76
4. Step 4: Simplify right side
   8,665.62x = 56,047,041.27
5. Step 5: Solve for x
   x = 56,047,041.27/8,665.62
6. Step 6: Final answer
   x = 6,467.75