Finding the Fourth Proportional to 12,962.50, 19,447.23 and 5,176.78

Step by Step Solution

1. Step 1: Write the proportion equation
   12,962.50 : 19,447.23 = 5,176.78 : x
2. Step 2: Convert to fraction form
   12,962.50/19,447.23 = 5,176.78/x
3. Step 3: Cross multiply
   12,962.50x = 19,447.23 × 5,176.78
4. Step 4: Simplify right side
   12,962.50x = 100,674,031.32
5. Step 5: Solve for x
   x = 100,674,031.32/12,962.50
6. Step 6: Final answer
   x = 7,766.56