Finding the Fourth Proportional to 20,084.05, 30,128.73 and 7,432.09

Step by Step Solution

1. Step 1: Write the proportion equation
   20,084.05 : 30,128.73 = 7,432.09 : x
2. Step 2: Convert to fraction form
   20,084.05/30,128.73 = 7,432.09/x
3. Step 3: Cross multiply
   20,084.05x = 30,128.73 × 7,432.09
4. Step 4: Simplify right side
   20,084.05x = 223,919,432.95
5. Step 5: Solve for x
   x = 223,919,432.95/20,084.05
6. Step 6: Final answer
   x = 11,149.12