Finding the Fourth Proportional to 23,131.94, 31,922.50 and 13,578.66

Step by Step Solution

1. Step 1: Write the proportion equation
   23,131.94 : 31,922.50 = 13,578.66 : x
2. Step 2: Convert to fraction form
   23,131.94/31,922.50 = 13,578.66/x
3. Step 3: Cross multiply
   23,131.94x = 31,922.50 × 13,578.66
4. Step 4: Simplify right side
   23,131.94x = 433,464,773.85
5. Step 5: Solve for x
   x = 433,464,773.85/23,131.94
6. Step 6: Final answer
   x = 18,738.80