Finding the Fourth Proportional to 9,069.50, 13,606.53 and 4,391.75

Step by Step Solution

1. Step 1: Write the proportion equation
   9,069.50 : 13,606.53 = 4,391.75 : x
2. Step 2: Convert to fraction form
   9,069.50/13,606.53 = 4,391.75/x
3. Step 3: Cross multiply
   9,069.50x = 13,606.53 × 4,391.75
4. Step 4: Simplify right side
   9,069.50x = 59,756,410.09
5. Step 5: Solve for x
   x = 59,756,410.09/9,069.50
6. Step 6: Final answer
   x = 6,588.73