Finding the Fourth Proportional to 20,612.48, 30,935.12 and 7,468.61

Step by Step Solution

1. Step 1: Write the proportion equation
   20,612.48 : 30,935.12 = 7,468.61 : x
2. Step 2: Convert to fraction form
   20,612.48/30,935.12 = 7,468.61/x
3. Step 3: Cross multiply
   20,612.48x = 30,935.12 × 7,468.61
4. Step 4: Simplify right side
   20,612.48x = 231,042,154.56
5. Step 5: Solve for x
   x = 231,042,154.56/20,612.48
6. Step 6: Final answer
   x = 11,208.85