Finding the Fourth Proportional to 12,723.90, 19,086.66 and 4,404.72

Step by Step Solution

1. Step 1: Write the proportion equation
   12,723.90 : 19,086.66 = 4,404.72 : x
2. Step 2: Convert to fraction form
   12,723.90/19,086.66 = 4,404.72/x
3. Step 3: Cross multiply
   12,723.90x = 19,086.66 × 4,404.72
4. Step 4: Simplify right side
   12,723.90x = 84,071,393.04
5. Step 5: Solve for x
   x = 84,071,393.04/12,723.90
6. Step 6: Final answer
   x = 6,607.36