Finding the Fourth Proportional to 9,640.60, 13,302.94 and 5,448.84

Step by Step Solution

1. Step 1: Write the proportion equation
   9,640.60 : 13,302.94 = 5,448.84 : x
2. Step 2: Convert to fraction form
   9,640.60/13,302.94 = 5,448.84/x
3. Step 3: Cross multiply
   9,640.60x = 13,302.94 × 5,448.84
4. Step 4: Simplify right side
   9,640.60x = 72,485,591.59
5. Step 5: Solve for x
   x = 72,485,591.59/9,640.60
6. Step 6: Final answer
   x = 7,518.78