Finding the Fourth Proportional to 9,697.80, 13,389.30 and 7,455.54

Step by Step Solution

1. Step 1: Write the proportion equation
   9,697.80 : 13,389.30 = 7,455.54 : x
2. Step 2: Convert to fraction form
   9,697.80/13,389.30 = 7,455.54/x
3. Step 3: Cross multiply
   9,697.80x = 13,389.30 × 7,455.54
4. Step 4: Simplify right side
   9,697.80x = 99,824,461.72
5. Step 5: Solve for x
   x = 99,824,461.72/9,697.80
6. Step 6: Final answer
   x = 10,293.52