Finding the Fourth Proportional to 12,383.72, 17,085.37 and 7,074.77

Step by Step Solution

1. Step 1: Write the proportion equation
   12,383.72 : 17,085.37 = 7,074.77 : x
2. Step 2: Convert to fraction form
   12,383.72/17,085.37 = 7,074.77/x
3. Step 3: Cross multiply
   12,383.72x = 17,085.37 × 7,074.77
4. Step 4: Simplify right side
   12,383.72x = 120,875,063.11
5. Step 5: Solve for x
   x = 120,875,063.11/12,383.72
6. Step 6: Final answer
   x = 9,760.80