Finding the Fourth Proportional to 21,145.86, 31,651.83 and 14,876.82

Step by Step Solution

1. Step 1: Write the proportion equation
   21,145.86 : 31,651.83 = 14,876.82 : x
2. Step 2: Convert to fraction form
   21,145.86/31,651.83 = 14,876.82/x
3. Step 3: Cross multiply
   21,145.86x = 31,651.83 × 14,876.82
4. Step 4: Simplify right side
   21,145.86x = 470,878,577.58
5. Step 5: Solve for x
   x = 470,878,577.58/21,145.86
6. Step 6: Final answer
   x = 22,268.12