Finding the Fourth Proportional to 8,711.84, 13,069.56 and 3,518.12

Step by Step Solution

1. Step 1: Write the proportion equation
   8,711.84 : 13,069.56 = 3,518.12 : x
2. Step 2: Convert to fraction form
   8,711.84/13,069.56 = 3,518.12/x
3. Step 3: Cross multiply
   8,711.84x = 13,069.56 × 3,518.12
4. Step 4: Simplify right side
   8,711.84x = 45,980,280.43
5. Step 5: Solve for x
   x = 45,980,280.43/8,711.84
6. Step 6: Final answer
   x = 5,277.91