Finding the Fourth Proportional to 12,685.86, 19,007.82 and 4,361.40

Step by Step Solution

1. Step 1: Write the proportion equation
   12,685.86 : 19,007.82 = 4,361.40 : x
2. Step 2: Convert to fraction form
   12,685.86/19,007.82 = 4,361.40/x
3. Step 3: Cross multiply
   12,685.86x = 19,007.82 × 4,361.40
4. Step 4: Simplify right side
   12,685.86x = 82,900,706.15
5. Step 5: Solve for x
   x = 82,900,706.15/12,685.86
6. Step 6: Final answer
   x = 6,534.89