Finding the Fourth Proportional to 9,788.56, 13,510.56 and 5,599.28

Step by Step Solution

1. Step 1: Write the proportion equation
   9,788.56 : 13,510.56 = 5,599.28 : x
2. Step 2: Convert to fraction form
   9,788.56/13,510.56 = 5,599.28/x
3. Step 3: Cross multiply
   9,788.56x = 13,510.56 × 5,599.28
4. Step 4: Simplify right side
   9,788.56x = 75,649,408.40
5. Step 5: Solve for x
   x = 75,649,408.40/9,788.56
6. Step 6: Final answer
   x = 7,728.35