Finding the Fourth Proportional to 10,660.88, 15,992.22 and 2,870.12

Step by Step Solution

1. Step 1: Write the proportion equation
   10,660.88 : 15,992.22 = 2,870.12 : x
2. Step 2: Convert to fraction form
   10,660.88/15,992.22 = 2,870.12/x
3. Step 3: Cross multiply
   10,660.88x = 15,992.22 × 2,870.12
4. Step 4: Simplify right side
   10,660.88x = 45,899,590.47
5. Step 5: Solve for x
   x = 45,899,590.47/10,660.88
6. Step 6: Final answer
   x = 4,305.42