Finding the Fourth Proportional to 9,699.12, 14,538.72 and 5,530.60

Step by Step Solution

1. Step 1: Write the proportion equation
   9,699.12 : 14,538.72 = 5,530.60 : x
2. Step 2: Convert to fraction form
   9,699.12/14,538.72 = 5,530.60/x
3. Step 3: Cross multiply
   9,699.12x = 14,538.72 × 5,530.60
4. Step 4: Simplify right side
   9,699.12x = 80,407,844.83
5. Step 5: Solve for x
   x = 80,407,844.83/9,699.12
6. Step 6: Final answer
   x = 8,290.22