Finding the Fourth Proportional to 8,665.86, 11,958.89 and 4,686.98

Step by Step Solution

1. Step 1: Write the proportion equation
   8,665.86 : 11,958.89 = 4,686.98 : x
2. Step 2: Convert to fraction form
   8,665.86/11,958.89 = 4,686.98/x
3. Step 3: Cross multiply
   8,665.86x = 11,958.89 × 4,686.98
4. Step 4: Simplify right side
   8,665.86x = 56,050,995.02
5. Step 5: Solve for x
   x = 56,050,995.02/8,665.86
6. Step 6: Final answer
   x = 6,468.02