Finding the Fourth Proportional to 12,960.72, 19,441.05 and 5,175

Step by Step Solution

1. Step 1: Write the proportion equation
   12,960.72 : 19,441.05 = 5,175 : x
2. Step 2: Convert to fraction form
   12,960.72/19,441.05 = 5,175/x
3. Step 3: Cross multiply
   12,960.72x = 19,441.05 × 5,175
4. Step 4: Simplify right side
   12,960.72x = 100,607,414.34
5. Step 5: Solve for x
   x = 100,607,414.34/12,960.72
6. Step 6: Final answer
   x = 7,762.49