Finding the Fourth Proportional to 13,588.05, 20,379.89 and 3,725.04

Step by Step Solution

1. Step 1: Write the proportion equation
   13,588.05 : 20,379.89 = 3,725.04 : x
2. Step 2: Convert to fraction form
   13,588.05/20,379.89 = 3,725.04/x
3. Step 3: Cross multiply
   13,588.05x = 20,379.89 × 3,725.04
4. Step 4: Simplify right side
   13,588.05x = 75,915,803.55
5. Step 5: Solve for x
   x = 75,915,803.55/13,588.05
6. Step 6: Final answer
   x = 5,586.96