Finding the Fourth Proportional to 12,082.29, 18,128.04 and 4,691.93

Step by Step Solution

1. Step 1: Write the proportion equation
   12,082.29 : 18,128.04 = 4,691.93 : x
2. Step 2: Convert to fraction form
   12,082.29/18,128.04 = 4,691.93/x
3. Step 3: Cross multiply
   12,082.29x = 18,128.04 × 4,691.93
4. Step 4: Simplify right side
   12,082.29x = 85,055,494.72
5. Step 5: Solve for x
   x = 85,055,494.72/12,082.29
6. Step 6: Final answer
   x = 7,039.68