Finding the Fourth Proportional to 22,812.42, 31,480.80 and 12,741.03

Step by Step Solution

1. Step 1: Write the proportion equation
   22,812.42 : 31,480.80 = 12,741.03 : x
2. Step 2: Convert to fraction form
   22,812.42/31,480.80 = 12,741.03/x
3. Step 3: Cross multiply
   22,812.42x = 31,480.80 × 12,741.03
4. Step 4: Simplify right side
   22,812.42x = 401,097,817.22
5. Step 5: Solve for x
   x = 401,097,817.22/22,812.42
6. Step 6: Final answer
   x = 17,582.43