Finding the Fourth Proportional to 22,860.50, 31,551.54 and 13,429.06

Step by Step Solution

1. Step 1: Write the proportion equation
   22,860.50 : 31,551.54 = 13,429.06 : x
2. Step 2: Convert to fraction form
   22,860.50/31,551.54 = 13,429.06/x
3. Step 3: Cross multiply
   22,860.50x = 31,551.54 × 13,429.06
4. Step 4: Simplify right side
   22,860.50x = 423,707,456.61
5. Step 5: Solve for x
   x = 423,707,456.61/22,860.50
6. Step 6: Final answer
   x = 18,534.48