Finding the Fourth Proportional to 30,838.71, 42,559.35 and 17,405.07

Step by Step Solution

1. Step 1: Write the proportion equation
   30,838.71 : 42,559.35 = 17,405.07 : x
2. Step 2: Convert to fraction form
   30,838.71/42,559.35 = 17,405.07/x
3. Step 3: Cross multiply
   30,838.71x = 42,559.35 × 17,405.07
4. Step 4: Simplify right side
   30,838.71x = 740,748,465.90
5. Step 5: Solve for x
   x = 740,748,465.90/30,838.71
6. Step 6: Final answer
   x = 24,020.09