Finding the Fourth Proportional to 30,936.37, 42,702.34 and 18,188.94

Step by Step Solution

1. Step 1: Write the proportion equation
   30,936.37 : 42,702.34 = 18,188.94 : x
2. Step 2: Convert to fraction form
   30,936.37/42,702.34 = 18,188.94/x
3. Step 3: Cross multiply
   30,936.37x = 42,702.34 × 18,188.94
4. Step 4: Simplify right side
   30,936.37x = 776,710,300.12
5. Step 5: Solve for x
   x = 776,710,300.12/30,936.37
6. Step 6: Final answer
   x = 25,106.70