Finding the Fourth Proportional to 10,513.91, 15,770.92 and 3,118.43

Step by Step Solution

1. Step 1: Write the proportion equation
   10,513.91 : 15,770.92 = 3,118.43 : x
2. Step 2: Convert to fraction form
   10,513.91/15,770.92 = 3,118.43/x
3. Step 3: Cross multiply
   10,513.91x = 15,770.92 × 3,118.43
4. Step 4: Simplify right side
   10,513.91x = 49,180,510.06
5. Step 5: Solve for x
   x = 49,180,510.06/10,513.91
6. Step 6: Final answer
   x = 4,677.66