Finding the Fourth Proportional to 12,689.82, 19,036.54 and 3,925.42

Step by Step Solution

1. Step 1: Write the proportion equation
   12,689.82 : 19,036.54 = 3,925.42 : x
2. Step 2: Convert to fraction form
   12,689.82/19,036.54 = 3,925.42/x
3. Step 3: Cross multiply
   12,689.82x = 19,036.54 × 3,925.42
4. Step 4: Simplify right side
   12,689.82x = 74,726,414.85
5. Step 5: Solve for x
   x = 74,726,414.85/12,689.82
6. Step 6: Final answer
   x = 5,888.69