Finding the Fourth Proportional to 20,738.26, 31,107.12 and 5,156.02

Step by Step Solution

1. Step 1: Write the proportion equation
   20,738.26 : 31,107.12 = 5,156.02 : x
2. Step 2: Convert to fraction form
   20,738.26/31,107.12 = 5,156.02/x
3. Step 3: Cross multiply
   20,738.26x = 31,107.12 × 5,156.02
4. Step 4: Simplify right side
   20,738.26x = 160,388,932.86
5. Step 5: Solve for x
   x = 160,388,932.86/20,738.26
6. Step 6: Final answer
   x = 7,733.96