Finding the Fourth Proportional to 30,640.96, 42,277.96 and 17,888.35

Step by Step Solution

1. Step 1: Write the proportion equation
   30,640.96 : 42,277.96 = 17,888.35 : x
2. Step 2: Convert to fraction form
   30,640.96/42,277.96 = 17,888.35/x
3. Step 3: Cross multiply
   30,640.96x = 42,277.96 × 17,888.35
4. Step 4: Simplify right side
   30,640.96x = 756,282,945.77
5. Step 5: Solve for x
   x = 756,282,945.77/30,640.96
6. Step 6: Final answer
   x = 24,682.09