Finding the Fourth Proportional to 13,725, 18,940.59 and 7,437.42

Step by Step Solution

1. Step 1: Write the proportion equation
   13,725 : 18,940.59 = 7,437.42 : x
2. Step 2: Convert to fraction form
   13,725/18,940.59 = 7,437.42/x
3. Step 3: Cross multiply
   13,725x = 18,940.59 × 7,437.42
4. Step 4: Simplify right side
   13,725x = 140,869,122.88
5. Step 5: Solve for x
   x = 140,869,122.88/13,725
6. Step 6: Final answer
   x = 10,263.69