Finding the Fourth Proportional to 12,670.16, 17,480.56 and 7,360.64

Step by Step Solution

1. Step 1: Write the proportion equation
   12,670.16 : 17,480.56 = 7,360.64 : x
2. Step 2: Convert to fraction form
   12,670.16/17,480.56 = 7,360.64/x
3. Step 3: Cross multiply
   12,670.16x = 17,480.56 × 7,360.64
4. Step 4: Simplify right side
   12,670.16x = 128,668,109.16
5. Step 5: Solve for x
   x = 128,668,109.16/12,670.16
6. Step 6: Final answer
   x = 10,155.21