Finding the Fourth Proportional to 30,487.16, 42,079.02 and 18,551

Step by Step Solution

1. Step 1: Write the proportion equation
   30,487.16 : 42,079.02 = 18,551 : x
2. Step 2: Convert to fraction form
   30,487.16/42,079.02 = 18,551/x
3. Step 3: Cross multiply
   30,487.16x = 42,079.02 × 18,551
4. Step 4: Simplify right side
   30,487.16x = 780,607,900.02
5. Step 5: Solve for x
   x = 780,607,900.02/30,487.16
6. Step 6: Final answer
   x = 25,604.48