Finding the Fourth Proportional to 9,679.50, 13,357.98 and 5,488.02

Step by Step Solution

1. Step 1: Write the proportion equation
   9,679.50 : 13,357.98 = 5,488.02 : x
2. Step 2: Convert to fraction form
   9,679.50/13,357.98 = 5,488.02/x
3. Step 3: Cross multiply
   9,679.50x = 13,357.98 × 5,488.02
4. Step 4: Simplify right side
   9,679.50x = 73,308,861.40
5. Step 5: Solve for x
   x = 73,308,861.40/9,679.50
6. Step 6: Final answer
   x = 7,573.62