Finding the Fourth Proportional to 12,669.12, 17,480.43 and 7,360.74

Step by Step Solution

1. Step 1: Write the proportion equation
   12,669.12 : 17,480.43 = 7,360.74 : x
2. Step 2: Convert to fraction form
   12,669.12/17,480.43 = 7,360.74/x
3. Step 3: Cross multiply
   12,669.12x = 17,480.43 × 7,360.74
4. Step 4: Simplify right side
   12,669.12x = 128,668,900.32
5. Step 5: Solve for x
   x = 128,668,900.32/12,669.12
6. Step 6: Final answer
   x = 10,156.10