Finding the Fourth Proportional to 9,857.69, 14,785.69 and 3,617.45

Step by Step Solution

1. Step 1: Write the proportion equation
   9,857.69 : 14,785.69 = 3,617.45 : x
2. Step 2: Convert to fraction form
   9,857.69/14,785.69 = 3,617.45/x
3. Step 3: Cross multiply
   9,857.69x = 14,785.69 × 3,617.45
4. Step 4: Simplify right side
   9,857.69x = 53,486,494.29
5. Step 5: Solve for x
   x = 53,486,494.29/9,857.69
6. Step 6: Final answer
   x = 5,425.86