Finding the Fourth Proportional to 9,709.80, 13,405.86 and 7,467.54

Step by Step Solution

1. Step 1: Write the proportion equation
   9,709.80 : 13,405.86 = 7,467.54 : x
2. Step 2: Convert to fraction form
   9,709.80/13,405.86 = 7,467.54/x
3. Step 3: Cross multiply
   9,709.80x = 13,405.86 × 7,467.54
4. Step 4: Simplify right side
   9,709.80x = 100,108,795.78
5. Step 5: Solve for x
   x = 100,108,795.78/9,709.80
6. Step 6: Final answer
   x = 10,310.08