Finding the Fourth Proportional to 14,485.28, 19,978.68 and 10,519.52

Step by Step Solution

1. Step 1: Write the proportion equation
   14,485.28 : 19,978.68 = 10,519.52 : x
2. Step 2: Convert to fraction form
   14,485.28/19,978.68 = 10,519.52/x
3. Step 3: Cross multiply
   14,485.28x = 19,978.68 × 10,519.52
4. Step 4: Simplify right side
   14,485.28x = 210,166,123.83
5. Step 5: Solve for x
   x = 210,166,123.83/14,485.28
6. Step 6: Final answer
   x = 14,508.94