Finding the Fourth Proportional to 22,823.88, 31,494.06 and 13,389

Step by Step Solution

1. Step 1: Write the proportion equation
   22,823.88 : 31,494.06 = 13,389 : x
2. Step 2: Convert to fraction form
   22,823.88/31,494.06 = 13,389/x
3. Step 3: Cross multiply
   22,823.88x = 31,494.06 × 13,389
4. Step 4: Simplify right side
   22,823.88x = 421,673,969.34
5. Step 5: Solve for x
   x = 421,673,969.34/22,823.88
6. Step 6: Final answer
   x = 18,475.12