Finding the Fourth Proportional to 19,831.56, 27,315 and 14,779.62

Step by Step Solution

1. Step 1: Write the proportion equation
   19,831.56 : 27,315 = 14,779.62 : x
2. Step 2: Convert to fraction form
   19,831.56/27,315 = 14,779.62/x
3. Step 3: Cross multiply
   19,831.56x = 27,315 × 14,779.62
4. Step 4: Simplify right side
   19,831.56x = 403,705,320.30
5. Step 5: Solve for x
   x = 403,705,320.30/19,831.56
6. Step 6: Final answer
   x = 20,356.71