Finding the Fourth Proportional to 30,566.36, 42,199.98 and 19,973.72

Step by Step Solution

1. Step 1: Write the proportion equation
   30,566.36 : 42,199.98 = 19,973.72 : x
2. Step 2: Convert to fraction form
   30,566.36/42,199.98 = 19,973.72/x
3. Step 3: Cross multiply
   30,566.36x = 42,199.98 × 19,973.72
4. Step 4: Simplify right side
   30,566.36x = 842,890,584.53
5. Step 5: Solve for x
   x = 842,890,584.53/30,566.36
6. Step 6: Final answer
   x = 27,575.76