Finding the Fourth Proportional to 22,768.86, 31,422.63 and 12,697.98

Step by Step Solution

1. Step 1: Write the proportion equation
   22,768.86 : 31,422.63 = 12,697.98 : x
2. Step 2: Convert to fraction form
   22,768.86/31,422.63 = 12,697.98/x
3. Step 3: Cross multiply
   22,768.86x = 31,422.63 × 12,697.98
4. Step 4: Simplify right side
   22,768.86x = 399,003,927.29
5. Step 5: Solve for x
   x = 399,003,927.29/22,768.86
6. Step 6: Final answer
   x = 17,524.11