Finding the Fourth Proportional to 22,685.14, 31,298.01 and 13,729.24

Step by Step Solution

1. Step 1: Write the proportion equation
   22,685.14 : 31,298.01 = 13,729.24 : x
2. Step 2: Convert to fraction form
   22,685.14/31,298.01 = 13,729.24/x
3. Step 3: Cross multiply
   22,685.14x = 31,298.01 × 13,729.24
4. Step 4: Simplify right side
   22,685.14x = 429,697,890.81
5. Step 5: Solve for x
   x = 429,697,890.81/22,685.14
6. Step 6: Final answer
   x = 18,941.82