Finding the Fourth Proportional to 11,857.43, 16,365.54 and 7,613.85

Step by Step Solution

1. Step 1: Write the proportion equation
   11,857.43 : 16,365.54 = 7,613.85 : x
2. Step 2: Convert to fraction form
   11,857.43/16,365.54 = 7,613.85/x
3. Step 3: Cross multiply
   11,857.43x = 16,365.54 × 7,613.85
4. Step 4: Simplify right side
   11,857.43x = 124,604,764.60
5. Step 5: Solve for x
   x = 124,604,764.60/11,857.43
6. Step 6: Final answer
   x = 10,508.59