Finding the Fourth Proportional to 9,769.59, 13,481.23 and 5,521.02

Step by Step Solution

1. Step 1: Write the proportion equation
   9,769.59 : 13,481.23 = 5,521.02 : x
2. Step 2: Convert to fraction form
   9,769.59/13,481.23 = 5,521.02/x
3. Step 3: Cross multiply
   9,769.59x = 13,481.23 × 5,521.02
4. Step 4: Simplify right side
   9,769.59x = 74,430,140.45
5. Step 5: Solve for x
   x = 74,430,140.45/9,769.59
6. Step 6: Final answer
   x = 7,618.55