Finding the Fourth Proportional to 22,814.10, 31,483.14 and 12,742.72

Step by Step Solution

1. Step 1: Write the proportion equation
   22,814.10 : 31,483.14 = 12,742.72 : x
2. Step 2: Convert to fraction form
   22,814.10/31,483.14 = 12,742.72/x
3. Step 3: Cross multiply
   22,814.10x = 31,483.14 × 12,742.72
4. Step 4: Simplify right side
   22,814.10x = 401,180,837.74
5. Step 5: Solve for x
   x = 401,180,837.74/22,814.10
6. Step 6: Final answer
   x = 17,584.78