Finding the Fourth Proportional to 22,813.43, 31,482.20 and 12,742.01

Step by Step Solution

1. Step 1: Write the proportion equation
   22,813.43 : 31,482.20 = 12,742.01 : x
2. Step 2: Convert to fraction form
   22,813.43/31,482.20 = 12,742.01/x
3. Step 3: Cross multiply
   22,813.43x = 31,482.20 × 12,742.01
4. Step 4: Simplify right side
   22,813.43x = 401,146,451.94
5. Step 5: Solve for x
   x = 401,146,451.94/22,813.43
6. Step 6: Final answer
   x = 17,583.79