Finding the Fourth Proportional to 7,156.22, 9,876.15 and 3,969.83

Step by Step Solution

1. Step 1: Write the proportion equation
   7,156.22 : 9,876.15 = 3,969.83 : x
2. Step 2: Convert to fraction form
   7,156.22/9,876.15 = 3,969.83/x
3. Step 3: Cross multiply
   7,156.22x = 9,876.15 × 3,969.83
4. Step 4: Simplify right side
   7,156.22x = 39,206,587.17
5. Step 5: Solve for x
   x = 39,206,587.17/7,156.22
6. Step 6: Final answer
   x = 5,478.68