Finding the Fourth Proportional to 22,428.64, 33,672.72 and 19,162.72

Step by Step Solution

1. Step 1: Write the proportion equation
   22,428.64 : 33,672.72 = 19,162.72 : x
2. Step 2: Convert to fraction form
   22,428.64/33,672.72 = 19,162.72/x
3. Step 3: Cross multiply
   22,428.64x = 33,672.72 × 19,162.72
4. Step 4: Simplify right side
   22,428.64x = 645,260,905.00
5. Step 5: Solve for x
   x = 645,260,905.00/22,428.64
6. Step 6: Final answer
   x = 28,769.51