Finding the Fourth Proportional to 18,362.33, 25,340.18 and 9,978.83

Step by Step Solution

1. Step 1: Write the proportion equation
   18,362.33 : 25,340.18 = 9,978.83 : x
2. Step 2: Convert to fraction form
   18,362.33/25,340.18 = 9,978.83/x
3. Step 3: Cross multiply
   18,362.33x = 25,340.18 × 9,978.83
4. Step 4: Simplify right side
   18,362.33x = 252,865,298.50
5. Step 5: Solve for x
   x = 252,865,298.50/18,362.33
6. Step 6: Final answer
   x = 13,770.87