Finding the Fourth Proportional to 20,395.86, 28,146.72 and 11,444.01

Step by Step Solution

1. Step 1: Write the proportion equation
   20,395.86 : 28,146.72 = 11,444.01 : x
2. Step 2: Convert to fraction form
   20,395.86/28,146.72 = 11,444.01/x
3. Step 3: Cross multiply
   20,395.86x = 28,146.72 × 11,444.01
4. Step 4: Simplify right side
   20,395.86x = 322,111,345.15
5. Step 5: Solve for x
   x = 322,111,345.15/20,395.86
6. Step 6: Final answer
   x = 15,792.98