Finding the Fourth Proportional to 51,018.18, 76,527.16 and 13,578.25

Step by Step Solution

1. Step 1: Write the proportion equation
   51,018.18 : 76,527.16 = 13,578.25 : x
2. Step 2: Convert to fraction form
   51,018.18/76,527.16 = 13,578.25/x
3. Step 3: Cross multiply
   51,018.18x = 76,527.16 × 13,578.25
4. Step 4: Simplify right side
   51,018.18x = 1,039,104,910.27
5. Step 5: Solve for x
   x = 1,039,104,910.27/51,018.18
6. Step 6: Final answer
   x = 20,367.35