Finding the Fourth Proportional to 30,780.16, 42,474.06 and 17,354.72

Step by Step Solution

1. Step 1: Write the proportion equation
   30,780.16 : 42,474.06 = 17,354.72 : x
2. Step 2: Convert to fraction form
   30,780.16/42,474.06 = 17,354.72/x
3. Step 3: Cross multiply
   30,780.16x = 42,474.06 × 17,354.72
4. Step 4: Simplify right side
   30,780.16x = 737,125,524.75
5. Step 5: Solve for x
   x = 737,125,524.75/30,780.16
6. Step 6: Final answer
   x = 23,948.08