Finding the Fourth Proportional to 20,714.94, 31,072.72 and 5,132.56

Step by Step Solution

1. Step 1: Write the proportion equation
   20,714.94 : 31,072.72 = 5,132.56 : x
2. Step 2: Convert to fraction form
   20,714.94/31,072.72 = 5,132.56/x
3. Step 3: Cross multiply
   20,714.94x = 31,072.72 × 5,132.56
4. Step 4: Simplify right side
   20,714.94x = 159,482,599.76
5. Step 5: Solve for x
   x = 159,482,599.76/20,714.94
6. Step 6: Final answer
   x = 7,698.92