Finding the Fourth Proportional to 5,410.71, 8,116.56 and 1,515.12

Step by Step Solution

1. Step 1: Write the proportion equation
   5,410.71 : 8,116.56 = 1,515.12 : x
2. Step 2: Convert to fraction form
   5,410.71/8,116.56 = 1,515.12/x
3. Step 3: Cross multiply
   5,410.71x = 8,116.56 × 1,515.12
4. Step 4: Simplify right side
   5,410.71x = 12,297,562.39
5. Step 5: Solve for x
   x = 12,297,562.39/5,410.71
6. Step 6: Final answer
   x = 2,272.82