Finding the Fourth Proportional to 30,913.61, 42,660.78 and 17,484.58

Step by Step Solution

1. Step 1: Write the proportion equation
   30,913.61 : 42,660.78 = 17,484.58 : x
2. Step 2: Convert to fraction form
   30,913.61/42,660.78 = 17,484.58/x
3. Step 3: Cross multiply
   30,913.61x = 42,660.78 × 17,484.58
4. Step 4: Simplify right side
   30,913.61x = 745,905,607.47
5. Step 5: Solve for x
   x = 745,905,607.47/30,913.61
6. Step 6: Final answer
   x = 24,128.72