Finding the Fourth Proportional to 22,647.42, 31,256.32 and 13,694.98

Step by Step Solution

1. Step 1: Write the proportion equation
   22,647.42 : 31,256.32 = 13,694.98 : x
2. Step 2: Convert to fraction form
   22,647.42/31,256.32 = 13,694.98/x
3. Step 3: Cross multiply
   22,647.42x = 31,256.32 × 13,694.98
4. Step 4: Simplify right side
   22,647.42x = 428,054,686.94
5. Step 5: Solve for x
   x = 428,054,686.94/22,647.42
6. Step 6: Final answer
   x = 18,900.82