Finding the Fourth Proportional to 12,585.04, 18,879.83 and 5,185.38

Step by Step Solution

1. Step 1: Write the proportion equation
   12,585.04 : 18,879.83 = 5,185.38 : x
2. Step 2: Convert to fraction form
   12,585.04/18,879.83 = 5,185.38/x
3. Step 3: Cross multiply
   12,585.04x = 18,879.83 × 5,185.38
4. Step 4: Simplify right side
   12,585.04x = 97,899,105.85
5. Step 5: Solve for x
   x = 97,899,105.85/12,585.04
6. Step 6: Final answer
   x = 7,779.01