Finding the Fourth Proportional to 21,175.83, 31,786.73 and 15,925.82

Step by Step Solution

1. Step 1: Write the proportion equation
   21,175.83 : 31,786.73 = 15,925.82 : x
2. Step 2: Convert to fraction form
   21,175.83/31,786.73 = 15,925.82/x
3. Step 3: Cross multiply
   21,175.83x = 31,786.73 × 15,925.82
4. Step 4: Simplify right side
   21,175.83x = 506,229,561.53
5. Step 5: Solve for x
   x = 506,229,561.53/21,175.83
6. Step 6: Final answer
   x = 23,906.01