Finding the Fourth Proportional to 11,962.68, 16,500.72 and 7,719.12

Step by Step Solution

1. Step 1: Write the proportion equation
   11,962.68 : 16,500.72 = 7,719.12 : x
2. Step 2: Convert to fraction form
   11,962.68/16,500.72 = 7,719.12/x
3. Step 3: Cross multiply
   11,962.68x = 16,500.72 × 7,719.12
4. Step 4: Simplify right side
   11,962.68x = 127,371,037.77
5. Step 5: Solve for x
   x = 127,371,037.77/11,962.68
6. Step 6: Final answer
   x = 10,647.37