Finding the Fourth Proportional to 9,057.63, 12,489.39 and 5,696.37

Step by Step Solution

1. Step 1: Write the proportion equation
   9,057.63 : 12,489.39 = 5,696.37 : x
2. Step 2: Convert to fraction form
   9,057.63/12,489.39 = 5,696.37/x
3. Step 3: Cross multiply
   9,057.63x = 12,489.39 × 5,696.37
4. Step 4: Simplify right side
   9,057.63x = 71,144,186.51
5. Step 5: Solve for x
   x = 71,144,186.51/9,057.63
6. Step 6: Final answer
   x = 7,854.61