Finding the Fourth Proportional to 30,819.46, 42,528.50 and 17,391.96

Step by Step Solution

1. Step 1: Write the proportion equation
   30,819.46 : 42,528.50 = 17,391.96 : x
2. Step 2: Convert to fraction form
   30,819.46/42,528.50 = 17,391.96/x
3. Step 3: Cross multiply
   30,819.46x = 42,528.50 × 17,391.96
4. Step 4: Simplify right side
   30,819.46x = 739,653,970.86
5. Step 5: Solve for x
   x = 739,653,970.86/30,819.46
6. Step 6: Final answer
   x = 23,999.58