Finding the Fourth Proportional to 30,978.94, 42,750.82 and 18,232.04

Step by Step Solution

1. Step 1: Write the proportion equation
   30,978.94 : 42,750.82 = 18,232.04 : x
2. Step 2: Convert to fraction form
   30,978.94/42,750.82 = 18,232.04/x
3. Step 3: Cross multiply
   30,978.94x = 42,750.82 × 18,232.04
4. Step 4: Simplify right side
   30,978.94x = 779,434,511.01
5. Step 5: Solve for x
   x = 779,434,511.01/30,978.94
6. Step 6: Final answer
   x = 25,160.14