Finding the Fourth Proportional to 12,480.69, 17,223.26 and 7,448.16

Step by Step Solution

1. Step 1: Write the proportion equation
   12,480.69 : 17,223.26 = 7,448.16 : x
2. Step 2: Convert to fraction form
   12,480.69/17,223.26 = 7,448.16/x
3. Step 3: Cross multiply
   12,480.69x = 17,223.26 × 7,448.16
4. Step 4: Simplify right side
   12,480.69x = 128,281,558.96
5. Step 5: Solve for x
   x = 128,281,558.96/12,480.69
6. Step 6: Final answer
   x = 10,278.40