Finding the Fourth Proportional to 30,499.97, 42,116.22 and 19,188.32

Step by Step Solution

1. Step 1: Write the proportion equation
   30,499.97 : 42,116.22 = 19,188.32 : x
2. Step 2: Convert to fraction form
   30,499.97/42,116.22 = 19,188.32/x
3. Step 3: Cross multiply
   30,499.97x = 42,116.22 × 19,188.32
4. Step 4: Simplify right side
   30,499.97x = 808,139,295.97
5. Step 5: Solve for x
   x = 808,139,295.97/30,499.97
6. Step 6: Final answer
   x = 26,496.40