Finding the Fourth Proportional to 9,089.42, 13,607.60 and 5,329.80

Step by Step Solution

1. Step 1: Write the proportion equation
   9,089.42 : 13,607.60 = 5,329.80 : x
2. Step 2: Convert to fraction form
   9,089.42/13,607.60 = 5,329.80/x
3. Step 3: Cross multiply
   9,089.42x = 13,607.60 × 5,329.80
4. Step 4: Simplify right side
   9,089.42x = 72,525,759.83
5. Step 5: Solve for x
   x = 72,525,759.83/9,089.42
6. Step 6: Final answer
   x = 7,979.14