Finding the Fourth Proportional to 22,814.16, 31,483.20 and 12,742.72

Step by Step Solution

1. Step 1: Write the proportion equation
   22,814.16 : 31,483.20 = 12,742.72 : x
2. Step 2: Convert to fraction form
   22,814.16/31,483.20 = 12,742.72/x
3. Step 3: Cross multiply
   22,814.16x = 31,483.20 × 12,742.72
4. Step 4: Simplify right side
   22,814.16x = 401,181,602.30
5. Step 5: Solve for x
   x = 401,181,602.30/22,814.16
6. Step 6: Final answer
   x = 17,584.76