Finding the Fourth Proportional to 22,816.12, 31,482.90 and 12,743.32

Step by Step Solution

1. Step 1: Write the proportion equation
   22,816.12 : 31,482.90 = 12,743.32 : x
2. Step 2: Convert to fraction form
   22,816.12/31,482.90 = 12,743.32/x
3. Step 3: Cross multiply
   22,816.12x = 31,482.90 × 12,743.32
4. Step 4: Simplify right side
   22,816.12x = 401,196,669.23
5. Step 5: Solve for x
   x = 401,196,669.23/22,816.12
6. Step 6: Final answer
   x = 17,583.91