Finding the Fourth Proportional to 20,102.37, 30,149.46 and 7,618.10

Step by Step Solution

1. Step 1: Write the proportion equation
   20,102.37 : 30,149.46 = 7,618.10 : x
2. Step 2: Convert to fraction form
   20,102.37/30,149.46 = 7,618.10/x
3. Step 3: Cross multiply
   20,102.37x = 30,149.46 × 7,618.10
4. Step 4: Simplify right side
   20,102.37x = 229,681,412.39
5. Step 5: Solve for x
   x = 229,681,412.39/20,102.37
6. Step 6: Final answer
   x = 11,425.59