Finding the Fourth Proportional to 31,152.63, 42,984.06 and 19,818

Step by Step Solution

1. Step 1: Write the proportion equation
   31,152.63 : 42,984.06 = 19,818 : x
2. Step 2: Convert to fraction form
   31,152.63/42,984.06 = 19,818/x
3. Step 3: Cross multiply
   31,152.63x = 42,984.06 × 19,818
4. Step 4: Simplify right side
   31,152.63x = 851,858,101.08
5. Step 5: Solve for x
   x = 851,858,101.08/31,152.63
6. Step 6: Final answer
   x = 27,344.66