Finding the Fourth Proportional to 22,700.42, 31,326.82 and 12,491.59

Step by Step Solution

1. Step 1: Write the proportion equation
   22,700.42 : 31,326.82 = 12,491.59 : x
2. Step 2: Convert to fraction form
   22,700.42/31,326.82 = 12,491.59/x
3. Step 3: Cross multiply
   22,700.42x = 31,326.82 × 12,491.59
4. Step 4: Simplify right side
   22,700.42x = 391,321,791.44
5. Step 5: Solve for x
   x = 391,321,791.44/22,700.42
6. Step 6: Final answer
   x = 17,238.53