Finding the Fourth Proportional to 12,960.50, 19,443.63 and 4,752.50

Step by Step Solution

1. Step 1: Write the proportion equation
   12,960.50 : 19,443.63 = 4,752.50 : x
2. Step 2: Convert to fraction form
   12,960.50/19,443.63 = 4,752.50/x
3. Step 3: Cross multiply
   12,960.50x = 19,443.63 × 4,752.50
4. Step 4: Simplify right side
   12,960.50x = 92,405,851.58
5. Step 5: Solve for x
   x = 92,405,851.58/12,960.50
6. Step 6: Final answer
   x = 7,129.81