Finding the Fourth Proportional to 14,528.38, 21,748.56 and 13,142.32

Step by Step Solution

1. Step 1: Write the proportion equation
   14,528.38 : 21,748.56 = 13,142.32 : x
2. Step 2: Convert to fraction form
   14,528.38/21,748.56 = 13,142.32/x
3. Step 3: Cross multiply
   14,528.38x = 21,748.56 × 13,142.32
4. Step 4: Simplify right side
   14,528.38x = 285,826,535.06
5. Step 5: Solve for x
   x = 285,826,535.06/14,528.38
6. Step 6: Final answer
   x = 19,673.67