Finding the Fourth Proportional to 10,648.17, 15,971.04 and 2,857.59

Step by Step Solution

1. Step 1: Write the proportion equation
   10,648.17 : 15,971.04 = 2,857.59 : x
2. Step 2: Convert to fraction form
   10,648.17/15,971.04 = 2,857.59/x
3. Step 3: Cross multiply
   10,648.17x = 15,971.04 × 2,857.59
4. Step 4: Simplify right side
   10,648.17x = 45,638,684.19
5. Step 5: Solve for x
   x = 45,638,684.19/10,648.17
6. Step 6: Final answer
   x = 4,286.06