Finding the Fourth Proportional to 12,379.83, 18,572.82 and 6,142.77

Step by Step Solution

1. Step 1: Write the proportion equation
   12,379.83 : 18,572.82 = 6,142.77 : x
2. Step 2: Convert to fraction form
   12,379.83/18,572.82 = 6,142.77/x
3. Step 3: Cross multiply
   12,379.83x = 18,572.82 × 6,142.77
4. Step 4: Simplify right side
   12,379.83x = 114,088,561.51
5. Step 5: Solve for x
   x = 114,088,561.51/12,379.83
6. Step 6: Final answer
   x = 9,215.68