Finding the Fourth Proportional to 9,465.12, 13,064.34 and 5,485.74

Step by Step Solution

1. Step 1: Write the proportion equation
   9,465.12 : 13,064.34 = 5,485.74 : x
2. Step 2: Convert to fraction form
   9,465.12/13,064.34 = 5,485.74/x
3. Step 3: Cross multiply
   9,465.12x = 13,064.34 × 5,485.74
4. Step 4: Simplify right side
   9,465.12x = 71,667,572.51
5. Step 5: Solve for x
   x = 71,667,572.51/9,465.12
6. Step 6: Final answer
   x = 7,571.76