Finding the Fourth Proportional to 11,379.56, 17,068.82 and 3,985.67

Step by Step Solution

1. Step 1: Write the proportion equation
   11,379.56 : 17,068.82 = 3,985.67 : x
2. Step 2: Convert to fraction form
   11,379.56/17,068.82 = 3,985.67/x
3. Step 3: Cross multiply
   11,379.56x = 17,068.82 × 3,985.67
4. Step 4: Simplify right side
   11,379.56x = 68,030,706.55
5. Step 5: Solve for x
   x = 68,030,706.55/11,379.56
6. Step 6: Final answer
   x = 5,978.33