Finding the Fourth Proportional to 16,085.15, 24,143.31 and 7,771.11

Step by Step Solution

1. Step 1: Write the proportion equation
   16,085.15 : 24,143.31 = 7,771.11 : x
2. Step 2: Convert to fraction form
   16,085.15/24,143.31 = 7,771.11/x
3. Step 3: Cross multiply
   16,085.15x = 24,143.31 × 7,771.11
4. Step 4: Simplify right side
   16,085.15x = 187,620,317.77
5. Step 5: Solve for x
   x = 187,620,317.77/16,085.15
6. Step 6: Final answer
   x = 11,664.20