Finding the Fourth Proportional to 30,792.76, 42,494.04 and 16,645.60

Step by Step Solution

1. Step 1: Write the proportion equation
   30,792.76 : 42,494.04 = 16,645.60 : x
2. Step 2: Convert to fraction form
   30,792.76/42,494.04 = 16,645.60/x
3. Step 3: Cross multiply
   30,792.76x = 42,494.04 × 16,645.60
4. Step 4: Simplify right side
   30,792.76x = 707,338,792.22
5. Step 5: Solve for x
   x = 707,338,792.22/30,792.76
6. Step 6: Final answer
   x = 22,970.94