Finding the Fourth Proportional to 20,228.58, 30,338.00 and 10,362.78

Step by Step Solution

1. Step 1: Write the proportion equation
   20,228.58 : 30,338.00 = 10,362.78 : x
2. Step 2: Convert to fraction form
   20,228.58/30,338.00 = 10,362.78/x
3. Step 3: Cross multiply
   20,228.58x = 30,338.00 × 10,362.78
4. Step 4: Simplify right side
   20,228.58x = 314,385,967.83
5. Step 5: Solve for x
   x = 314,385,967.83/20,228.58
6. Step 6: Final answer
   x = 15,541.67