Finding the Fourth Proportional to 9,508.95, 13,121.69 and 5,529.78

Step by Step Solution

1. Step 1: Write the proportion equation
   9,508.95 : 13,121.69 = 5,529.78 : x
2. Step 2: Convert to fraction form
   9,508.95/13,121.69 = 5,529.78/x
3. Step 3: Cross multiply
   9,508.95x = 13,121.69 × 5,529.78
4. Step 4: Simplify right side
   9,508.95x = 72,560,031.28
5. Step 5: Solve for x
   x = 72,560,031.28/9,508.95
6. Step 6: Final answer
   x = 7,630.71