Finding the Fourth Proportional to 9,485.79, 13,090.82 and 5,453.93

Step by Step Solution

1. Step 1: Write the proportion equation
   9,485.79 : 13,090.82 = 5,453.93 : x
2. Step 2: Convert to fraction form
   9,485.79/13,090.82 = 5,453.93/x
3. Step 3: Cross multiply
   9,485.79x = 13,090.82 × 5,453.93
4. Step 4: Simplify right side
   9,485.79x = 71,396,323.20
5. Step 5: Solve for x
   x = 71,396,323.20/9,485.79
6. Step 6: Final answer
   x = 7,526.66