Finding the Fourth Proportional to 30,592.16, 42,222.96 and 19,990.88

Step by Step Solution

1. Step 1: Write the proportion equation
   30,592.16 : 42,222.96 = 19,990.88 : x
2. Step 2: Convert to fraction form
   30,592.16/42,222.96 = 19,990.88/x
3. Step 3: Cross multiply
   30,592.16x = 42,222.96 × 19,990.88
4. Step 4: Simplify right side
   30,592.16x = 844,074,126.60
5. Step 5: Solve for x
   x = 844,074,126.60/30,592.16
6. Step 6: Final answer
   x = 27,591.19