Finding the Fourth Proportional to 9,789.26, 14,685.10 and 4,857.57

Step by Step Solution

1. Step 1: Write the proportion equation
   9,789.26 : 14,685.10 = 4,857.57 : x
2. Step 2: Convert to fraction form
   9,789.26/14,685.10 = 4,857.57/x
3. Step 3: Cross multiply
   9,789.26x = 14,685.10 × 4,857.57
4. Step 4: Simplify right side
   9,789.26x = 71,333,889.06
5. Step 5: Solve for x
   x = 71,333,889.06/9,789.26
6. Step 6: Final answer
   x = 7,286.96