Finding the Fourth Proportional to 9,810.72, 13,535.76 and 5,617.44

Step by Step Solution

1. Step 1: Write the proportion equation
   9,810.72 : 13,535.76 = 5,617.44 : x
2. Step 2: Convert to fraction form
   9,810.72/13,535.76 = 5,617.44/x
3. Step 3: Cross multiply
   9,810.72x = 13,535.76 × 5,617.44
4. Step 4: Simplify right side
   9,810.72x = 76,036,319.65
5. Step 5: Solve for x
   x = 76,036,319.65/9,810.72
6. Step 6: Final answer
   x = 7,750.33