Finding the Fourth Proportional to 22,776.64, 31,431.81 and 12,704.82

Step by Step Solution

1. Step 1: Write the proportion equation
   22,776.64 : 31,431.81 = 12,704.82 : x
2. Step 2: Convert to fraction form
   22,776.64/31,431.81 = 12,704.82/x
3. Step 3: Cross multiply
   22,776.64x = 31,431.81 × 12,704.82
4. Step 4: Simplify right side
   22,776.64x = 399,335,488.32
5. Step 5: Solve for x
   x = 399,335,488.32/22,776.64
6. Step 6: Final answer
   x = 17,532.68