Finding the Fourth Proportional to 3,925.25, 5,421.09 and 2,436.72

Step by Step Solution

1. Step 1: Write the proportion equation
   3,925.25 : 5,421.09 = 2,436.72 : x
2. Step 2: Convert to fraction form
   3,925.25/5,421.09 = 2,436.72/x
3. Step 3: Cross multiply
   3,925.25x = 5,421.09 × 2,436.72
4. Step 4: Simplify right side
   3,925.25x = 13,209,678.42
5. Step 5: Solve for x
   x = 13,209,678.42/3,925.25
6. Step 6: Final answer
   x = 3,365.31