Finding the Fourth Proportional to 30,475.24, 42,046.50 and 19,861

Step by Step Solution

1. Step 1: Write the proportion equation
   30,475.24 : 42,046.50 = 19,861 : x
2. Step 2: Convert to fraction form
   30,475.24/42,046.50 = 19,861/x
3. Step 3: Cross multiply
   30,475.24x = 42,046.50 × 19,861
4. Step 4: Simplify right side
   30,475.24x = 835,085,536.50
5. Step 5: Solve for x
   x = 835,085,536.50/30,475.24
6. Step 6: Final answer
   x = 27,402.10