Finding the Fourth Proportional to 30,989.32, 42,764.38 and 17,564.92

Step by Step Solution

1. Step 1: Write the proportion equation
   30,989.32 : 42,764.38 = 17,564.92 : x
2. Step 2: Convert to fraction form
   30,989.32/42,764.38 = 17,564.92/x
3. Step 3: Cross multiply
   30,989.32x = 42,764.38 × 17,564.92
4. Step 4: Simplify right side
   30,989.32x = 751,152,913.55
5. Step 5: Solve for x
   x = 751,152,913.55/30,989.32
6. Step 6: Final answer
   x = 24,239.09