Finding the Fourth Proportional to 3,725.84, 5,601.72 and 3,440.72

Step by Step Solution

1. Step 1: Write the proportion equation
   3,725.84 : 5,601.72 = 3,440.72 : x
2. Step 2: Convert to fraction form
   3,725.84/5,601.72 = 3,440.72/x
3. Step 3: Cross multiply
   3,725.84x = 5,601.72 × 3,440.72
4. Step 4: Simplify right side
   3,725.84x = 19,273,950.04
5. Step 5: Solve for x
   x = 19,273,950.04/3,725.84
6. Step 6: Final answer
   x = 5,173.05