Finding the Fourth Proportional to 20,152.34, 30,207.42 and 7,664.56

Step by Step Solution

1. Step 1: Write the proportion equation
   20,152.34 : 30,207.42 = 7,664.56 : x
2. Step 2: Convert to fraction form
   20,152.34/30,207.42 = 7,664.56/x
3. Step 3: Cross multiply
   20,152.34x = 30,207.42 × 7,664.56
4. Step 4: Simplify right side
   20,152.34x = 231,526,583.04
5. Step 5: Solve for x
   x = 231,526,583.04/20,152.34
6. Step 6: Final answer
   x = 11,488.82