Finding the Fourth Proportional to 20,310.56, 30,462.69 and 7,836.43

Step by Step Solution

1. Step 1: Write the proportion equation
   20,310.56 : 30,462.69 = 7,836.43 : x
2. Step 2: Convert to fraction form
   20,310.56/30,462.69 = 7,836.43/x
3. Step 3: Cross multiply
   20,310.56x = 30,462.69 × 7,836.43
4. Step 4: Simplify right side
   20,310.56x = 238,718,585.48
5. Step 5: Solve for x
   x = 238,718,585.48/20,310.56
6. Step 6: Final answer
   x = 11,753.42