Finding the Fourth Proportional to 12,723.93, 19,086.50 and 10,498.64

Step by Step Solution

1. Step 1: Write the proportion equation
   12,723.93 : 19,086.50 = 10,498.64 : x
2. Step 2: Convert to fraction form
   12,723.93/19,086.50 = 10,498.64/x
3. Step 3: Cross multiply
   12,723.93x = 19,086.50 × 10,498.64
4. Step 4: Simplify right side
   12,723.93x = 200,382,144.43
5. Step 5: Solve for x
   x = 200,382,144.43/12,723.93
6. Step 6: Final answer
   x = 15,748.45