Finding the Fourth Proportional to 9,603.30, 13,247.96 and 5,621.96

Step by Step Solution

1. Step 1: Write the proportion equation
   9,603.30 : 13,247.96 = 5,621.96 : x
2. Step 2: Convert to fraction form
   9,603.30/13,247.96 = 5,621.96/x
3. Step 3: Cross multiply
   9,603.30x = 13,247.96 × 5,621.96
4. Step 4: Simplify right side
   9,603.30x = 74,479,501.20
5. Step 5: Solve for x
   x = 74,479,501.20/9,603.30
6. Step 6: Final answer
   x = 7,755.62