Finding the Fourth Proportional to 30,690.52, 42,354.18 and 17,262.40

Step by Step Solution

1. Step 1: Write the proportion equation
   30,690.52 : 42,354.18 = 17,262.40 : x
2. Step 2: Convert to fraction form
   30,690.52/42,354.18 = 17,262.40/x
3. Step 3: Cross multiply
   30,690.52x = 42,354.18 × 17,262.40
4. Step 4: Simplify right side
   30,690.52x = 731,134,796.83
5. Step 5: Solve for x
   x = 731,134,796.83/30,690.52
6. Step 6: Final answer
   x = 23,822.82