Finding the Fourth Proportional to 6,499.13, 8,969.69 and 3,981.38

Step by Step Solution

1. Step 1: Write the proportion equation
   6,499.13 : 8,969.69 = 3,981.38 : x
2. Step 2: Convert to fraction form
   6,499.13/8,969.69 = 3,981.38/x
3. Step 3: Cross multiply
   6,499.13x = 8,969.69 × 3,981.38
4. Step 4: Simplify right side
   6,499.13x = 35,711,724.47
5. Step 5: Solve for x
   x = 35,711,724.47/6,499.13
6. Step 6: Final answer
   x = 5,494.85