Finding the Fourth Proportional to 22,823.51, 31,491.03 and 13,257.72

Step by Step Solution

1. Step 1: Write the proportion equation
   22,823.51 : 31,491.03 = 13,257.72 : x
2. Step 2: Convert to fraction form
   22,823.51/31,491.03 = 13,257.72/x
3. Step 3: Cross multiply
   22,823.51x = 31,491.03 × 13,257.72
4. Step 4: Simplify right side
   22,823.51x = 417,499,295.15
5. Step 5: Solve for x
   x = 417,499,295.15/22,823.51
6. Step 6: Final answer
   x = 18,292.51