Finding the Fourth Proportional to 10,930.40, 16,397.40 and 3,536.72

Step by Step Solution

1. Step 1: Write the proportion equation
   10,930.40 : 16,397.40 = 3,536.72 : x
2. Step 2: Convert to fraction form
   10,930.40/16,397.40 = 3,536.72/x
3. Step 3: Cross multiply
   10,930.40x = 16,397.40 × 3,536.72
4. Step 4: Simplify right side
   10,930.40x = 57,993,012.53
5. Step 5: Solve for x
   x = 57,993,012.53/10,930.40
6. Step 6: Final answer
   x = 5,305.66