Finding the Fourth Proportional to 22,940.48, 31,662.34 and 13,381.50

Step by Step Solution

1. Step 1: Write the proportion equation
   22,940.48 : 31,662.34 = 13,381.50 : x
2. Step 2: Convert to fraction form
   22,940.48/31,662.34 = 13,381.50/x
3. Step 3: Cross multiply
   22,940.48x = 31,662.34 × 13,381.50
4. Step 4: Simplify right side
   22,940.48x = 423,689,602.71
5. Step 5: Solve for x
   x = 423,689,602.71/22,940.48
6. Step 6: Final answer
   x = 18,469.08