Finding the Fourth Proportional to 52,560, 78,851.52 and 19,728

Step by Step Solution

1. Step 1: Write the proportion equation
   52,560 : 78,851.52 = 19,728 : x
2. Step 2: Convert to fraction form
   52,560/78,851.52 = 19,728/x
3. Step 3: Cross multiply
   52,560x = 78,851.52 × 19,728
4. Step 4: Simplify right side
   52,560x = 1,555,582,786.56
5. Step 5: Solve for x
   x = 1,555,582,786.56/52,560
6. Step 6: Final answer
   x = 29,596.32