Finding the Fourth Proportional to 11,379.15, 17,068.59 and 3,981.42

Step by Step Solution

1. Step 1: Write the proportion equation
   11,379.15 : 17,068.59 = 3,981.42 : x
2. Step 2: Convert to fraction form
   11,379.15/17,068.59 = 3,981.42/x
3. Step 3: Cross multiply
   11,379.15x = 17,068.59 × 3,981.42
4. Step 4: Simplify right side
   11,379.15x = 67,957,225.60
5. Step 5: Solve for x
   x = 67,957,225.60/11,379.15
6. Step 6: Final answer
   x = 5,972.08