Finding the Fourth Proportional to 5,457.86, 7,525.89 and 3,686.39

Step by Step Solution

1. Step 1: Write the proportion equation
   5,457.86 : 7,525.89 = 3,686.39 : x
2. Step 2: Convert to fraction form
   5,457.86/7,525.89 = 3,686.39/x
3. Step 3: Cross multiply
   5,457.86x = 7,525.89 × 3,686.39
4. Step 4: Simplify right side
   5,457.86x = 27,743,366.02
5. Step 5: Solve for x
   x = 27,743,366.02/5,457.86
6. Step 6: Final answer
   x = 5,083.19