Finding the Fourth Proportional to 13,487.05, 18,614.55 and 7,825.42

Step by Step Solution

1. Step 1: Write the proportion equation
   13,487.05 : 18,614.55 = 7,825.42 : x
2. Step 2: Convert to fraction form
   13,487.05/18,614.55 = 7,825.42/x
3. Step 3: Cross multiply
   13,487.05x = 18,614.55 × 7,825.42
4. Step 4: Simplify right side
   13,487.05x = 145,666,671.86
5. Step 5: Solve for x
   x = 145,666,671.86/13,487.05
6. Step 6: Final answer
   x = 10,800.48