Finding the Fourth Proportional to 30,948.72, 42,693.12 and 19,014.72

Step by Step Solution

1. Step 1: Write the proportion equation
   30,948.72 : 42,693.12 = 19,014.72 : x
2. Step 2: Convert to fraction form
   30,948.72/42,693.12 = 19,014.72/x
3. Step 3: Cross multiply
   30,948.72x = 42,693.12 × 19,014.72
4. Step 4: Simplify right side
   30,948.72x = 811,797,722.73
5. Step 5: Solve for x
   x = 811,797,722.73/30,948.72
6. Step 6: Final answer
   x = 26,230.41