Finding the Fourth Proportional to 9,866.00, 14,728.71 and 9,519.99

Step by Step Solution

1. Step 1: Write the proportion equation
   9,866.00 : 14,728.71 = 9,519.99 : x
2. Step 2: Convert to fraction form
   9,866.00/14,728.71 = 9,519.99/x
3. Step 3: Cross multiply
   9,866.00x = 14,728.71 × 9,519.99
4. Step 4: Simplify right side
   9,866.00x = 140,217,171.91
5. Step 5: Solve for x
   x = 140,217,171.91/9,866.00
6. Step 6: Final answer
   x = 14,212.17