Finding the Fourth Proportional to 20,679.31, 31,018.15 and 5,096.53

Step by Step Solution

1. Step 1: Write the proportion equation
   20,679.31 : 31,018.15 = 5,096.53 : x
2. Step 2: Convert to fraction form
   20,679.31/31,018.15 = 5,096.53/x
3. Step 3: Cross multiply
   20,679.31x = 31,018.15 × 5,096.53
4. Step 4: Simplify right side
   20,679.31x = 158,084,932.02
5. Step 5: Solve for x
   x = 158,084,932.02/20,679.31
6. Step 6: Final answer
   x = 7,644.59