Finding the Fourth Proportional to 22,428.12, 30,949.32 and 13,476

Step by Step Solution

1. Step 1: Write the proportion equation
   22,428.12 : 30,949.32 = 13,476 : x
2. Step 2: Convert to fraction form
   22,428.12/30,949.32 = 13,476/x
3. Step 3: Cross multiply
   22,428.12x = 30,949.32 × 13,476
4. Step 4: Simplify right side
   22,428.12x = 417,073,036.32
5. Step 5: Solve for x
   x = 417,073,036.32/22,428.12
6. Step 6: Final answer
   x = 18,595.99