Finding the Fourth Proportional to 30,840.61, 42,560.82 and 18,910.52

Step by Step Solution

1. Step 1: Write the proportion equation
   30,840.61 : 42,560.82 = 18,910.52 : x
2. Step 2: Convert to fraction form
   30,840.61/42,560.82 = 18,910.52/x
3. Step 3: Cross multiply
   30,840.61x = 42,560.82 × 18,910.52
4. Step 4: Simplify right side
   30,840.61x = 804,847,237.83
5. Step 5: Solve for x
   x = 804,847,237.83/30,840.61
6. Step 6: Final answer
   x = 26,096.99