Finding the Fourth Proportional to 14,486.43, 21,731.37 and 5,124.54

Step by Step Solution

1. Step 1: Write the proportion equation
   14,486.43 : 21,731.37 = 5,124.54 : x
2. Step 2: Convert to fraction form
   14,486.43/21,731.37 = 5,124.54/x
3. Step 3: Cross multiply
   14,486.43x = 21,731.37 × 5,124.54
4. Step 4: Simplify right side
   14,486.43x = 111,363,274.82
5. Step 5: Solve for x
   x = 111,363,274.82/14,486.43
6. Step 6: Final answer
   x = 7,687.42