Finding the Fourth Proportional to 4,978.17, 7,467.21 and 1,515.42

Step by Step Solution

1. Step 1: Write the proportion equation
   4,978.17 : 7,467.21 = 1,515.42 : x
2. Step 2: Convert to fraction form
   4,978.17/7,467.21 = 1,515.42/x
3. Step 3: Cross multiply
   4,978.17x = 7,467.21 × 1,515.42
4. Step 4: Simplify right side
   4,978.17x = 11,315,959.38
5. Step 5: Solve for x
   x = 11,315,959.38/4,978.17
6. Step 6: Final answer
   x = 2,273.12