Finding the Fourth Proportional to 9,859.89, 14,784.15 and 4,665.78

Step by Step Solution

1. Step 1: Write the proportion equation
   9,859.89 : 14,784.15 = 4,665.78 : x
2. Step 2: Convert to fraction form
   9,859.89/14,784.15 = 4,665.78/x
3. Step 3: Cross multiply
   9,859.89x = 14,784.15 × 4,665.78
4. Step 4: Simplify right side
   9,859.89x = 68,979,591.39
5. Step 5: Solve for x
   x = 68,979,591.39/9,859.89
6. Step 6: Final answer
   x = 6,995.98