Finding the Fourth Proportional to 9,770.72, 13,483.54 and 5,578.98

Step by Step Solution

1. Step 1: Write the proportion equation
   9,770.72 : 13,483.54 = 5,578.98 : x
2. Step 2: Convert to fraction form
   9,770.72/13,483.54 = 5,578.98/x
3. Step 3: Cross multiply
   9,770.72x = 13,483.54 × 5,578.98
4. Step 4: Simplify right side
   9,770.72x = 75,224,399.99
5. Step 5: Solve for x
   x = 75,224,399.99/9,770.72
6. Step 6: Final answer
   x = 7,698.96