Finding the Fourth Proportional to 9,485.65, 13,091.12 and 5,453.07

Step by Step Solution

1. Step 1: Write the proportion equation
   9,485.65 : 13,091.12 = 5,453.07 : x
2. Step 2: Convert to fraction form
   9,485.65/13,091.12 = 5,453.07/x
3. Step 3: Cross multiply
   9,485.65x = 13,091.12 × 5,453.07
4. Step 4: Simplify right side
   9,485.65x = 71,386,737.83
5. Step 5: Solve for x
   x = 71,386,737.83/9,485.65
6. Step 6: Final answer
   x = 7,525.76