Finding the Fourth Proportional to 10,015.76, 15,010.68 and 4,818.80

Step by Step Solution

1. Step 1: Write the proportion equation
   10,015.76 : 15,010.68 = 4,818.80 : x
2. Step 2: Convert to fraction form
   10,015.76/15,010.68 = 4,818.80/x
3. Step 3: Cross multiply
   10,015.76x = 15,010.68 × 4,818.80
4. Step 4: Simplify right side
   10,015.76x = 72,333,464.78
5. Step 5: Solve for x
   x = 72,333,464.78/10,015.76
6. Step 6: Final answer
   x = 7,221.96