Finding the Fourth Proportional to 30,540.56, 42,148.29 and 19,219.76

Step by Step Solution

1. Step 1: Write the proportion equation
   30,540.56 : 42,148.29 = 19,219.76 : x
2. Step 2: Convert to fraction form
   30,540.56/42,148.29 = 19,219.76/x
3. Step 3: Cross multiply
   30,540.56x = 42,148.29 × 19,219.76
4. Step 4: Simplify right side
   30,540.56x = 810,079,807.47
5. Step 5: Solve for x
   x = 810,079,807.47/30,540.56
6. Step 6: Final answer
   x = 26,524.72