Finding the Fourth Proportional to 9,559.56, 13,191.77 and 5,310.91

Step by Step Solution

1. Step 1: Write the proportion equation
   9,559.56 : 13,191.77 = 5,310.91 : x
2. Step 2: Convert to fraction form
   9,559.56/13,191.77 = 5,310.91/x
3. Step 3: Cross multiply
   9,559.56x = 13,191.77 × 5,310.91
4. Step 4: Simplify right side
   9,559.56x = 70,060,243.68
5. Step 5: Solve for x
   x = 70,060,243.68/9,559.56
6. Step 6: Final answer
   x = 7,328.81