Finding the Fourth Proportional to 23,023.20, 34,366.72 and 19,757.28

Step by Step Solution

1. Step 1: Write the proportion equation
   23,023.20 : 34,366.72 = 19,757.28 : x
2. Step 2: Convert to fraction form
   23,023.20/34,366.72 = 19,757.28/x
3. Step 3: Cross multiply
   23,023.20x = 34,366.72 × 19,757.28
4. Step 4: Simplify right side
   23,023.20x = 678,992,909.72
5. Step 5: Solve for x
   x = 678,992,909.72/23,023.20
6. Step 6: Final answer
   x = 29,491.68