Finding the Fourth Proportional to 30,753.63, 42,443.15 and 18,824.85

Step by Step Solution

1. Step 1: Write the proportion equation
   30,753.63 : 42,443.15 = 18,824.85 : x
2. Step 2: Convert to fraction form
   30,753.63/42,443.15 = 18,824.85/x
3. Step 3: Cross multiply
   30,753.63x = 42,443.15 × 18,824.85
4. Step 4: Simplify right side
   30,753.63x = 798,985,838.15
5. Step 5: Solve for x
   x = 798,985,838.15/30,753.63
6. Step 6: Final answer
   x = 25,980.21