Finding the Fourth Proportional to 30,791.17, 42,483.99 and 18,850.15

Step by Step Solution

1. Step 1: Write the proportion equation
   30,791.17 : 42,483.99 = 18,850.15 : x
2. Step 2: Convert to fraction form
   30,791.17/42,483.99 = 18,850.15/x
3. Step 3: Cross multiply
   30,791.17x = 42,483.99 × 18,850.15
4. Step 4: Simplify right side
   30,791.17x = 800,829,584.10
5. Step 5: Solve for x
   x = 800,829,584.10/30,791.17
6. Step 6: Final answer
   x = 26,008.42