Finding the Fourth Proportional to 13,725.89, 18,941.73 and 7,438.27

Step by Step Solution

1. Step 1: Write the proportion equation
   13,725.89 : 18,941.73 = 7,438.27 : x
2. Step 2: Convert to fraction form
   13,725.89/18,941.73 = 7,438.27/x
3. Step 3: Cross multiply
   13,725.89x = 18,941.73 × 7,438.27
4. Step 4: Simplify right side
   13,725.89x = 140,893,619.14
5. Step 5: Solve for x
   x = 140,893,619.14/13,725.89
6. Step 6: Final answer
   x = 10,264.81