Finding the Fourth Proportional to 12,395.91, 18,578.06 and 5,807.57

Step by Step Solution

1. Step 1: Write the proportion equation
   12,395.91 : 18,578.06 = 5,807.57 : x
2. Step 2: Convert to fraction form
   12,395.91/18,578.06 = 5,807.57/x
3. Step 3: Cross multiply
   12,395.91x = 18,578.06 × 5,807.57
4. Step 4: Simplify right side
   12,395.91x = 107,893,383.91
5. Step 5: Solve for x
   x = 107,893,383.91/12,395.91
6. Step 6: Final answer
   x = 8,703.95