Finding the Fourth Proportional to 10,017.72, 15,028.56 and 2,997.90

Step by Step Solution

1. Step 1: Write the proportion equation
   10,017.72 : 15,028.56 = 2,997.90 : x
2. Step 2: Convert to fraction form
   10,017.72/15,028.56 = 2,997.90/x
3. Step 3: Cross multiply
   10,017.72x = 15,028.56 × 2,997.90
4. Step 4: Simplify right side
   10,017.72x = 45,054,120.02
5. Step 5: Solve for x
   x = 45,054,120.02/10,017.72
6. Step 6: Final answer
   x = 4,497.44