Finding the Fourth Proportional to 3,725.34, 5,136.71 and 2,379.12

Step by Step Solution

1. Step 1: Write the proportion equation
   3,725.34 : 5,136.71 = 2,379.12 : x
2. Step 2: Convert to fraction form
   3,725.34/5,136.71 = 2,379.12/x
3. Step 3: Cross multiply
   3,725.34x = 5,136.71 × 2,379.12
4. Step 4: Simplify right side
   3,725.34x = 12,220,837.60
5. Step 5: Solve for x
   x = 12,220,837.60/3,725.34
6. Step 6: Final answer
   x = 3,280.46