Finding the Fourth Proportional to 9,485.64, 13,048.56 and 7,713.36

Step by Step Solution

1. Step 1: Write the proportion equation
   9,485.64 : 13,048.56 = 7,713.36 : x
2. Step 2: Convert to fraction form
   9,485.64/13,048.56 = 7,713.36/x
3. Step 3: Cross multiply
   9,485.64x = 13,048.56 × 7,713.36
4. Step 4: Simplify right side
   9,485.64x = 100,648,240.76
5. Step 5: Solve for x
   x = 100,648,240.76/9,485.64
6. Step 6: Final answer
   x = 10,610.59