Finding the Fourth Proportional to 22,771.54, 31,423.89 and 12,699.82

Step by Step Solution

1. Step 1: Write the proportion equation
   22,771.54 : 31,423.89 = 12,699.82 : x
2. Step 2: Convert to fraction form
   22,771.54/31,423.89 = 12,699.82/x
3. Step 3: Cross multiply
   22,771.54x = 31,423.89 × 12,699.82
4. Step 4: Simplify right side
   22,771.54x = 399,077,746.70
5. Step 5: Solve for x
   x = 399,077,746.70/22,771.54
6. Step 6: Final answer
   x = 17,525.29