Finding the Fourth Proportional to 3,864.53, 5,333.31 and 3,725.12

Step by Step Solution

1. Step 1: Write the proportion equation
   3,864.53 : 5,333.31 = 3,725.12 : x
2. Step 2: Convert to fraction form
   3,864.53/5,333.31 = 3,725.12/x
3. Step 3: Cross multiply
   3,864.53x = 5,333.31 × 3,725.12
4. Step 4: Simplify right side
   3,864.53x = 19,867,219.75
5. Step 5: Solve for x
   x = 19,867,219.75/3,864.53
6. Step 6: Final answer
   x = 5,140.91