Finding the Fourth Proportional to 7,005.67, 9,667.80 and 3,861.86

Step by Step Solution

1. Step 1: Write the proportion equation
   7,005.67 : 9,667.80 = 3,861.86 : x
2. Step 2: Convert to fraction form
   7,005.67/9,667.80 = 3,861.86/x
3. Step 3: Cross multiply
   7,005.67x = 9,667.80 × 3,861.86
4. Step 4: Simplify right side
   7,005.67x = 37,335,641.77
5. Step 5: Solve for x
   x = 37,335,641.77/7,005.67
6. Step 6: Final answer
   x = 5,329.35