Finding the Fourth Proportional to 30,931.41, 42,682.71 and 18,184.98

Step by Step Solution

1. Step 1: Write the proportion equation
   30,931.41 : 42,682.71 = 18,184.98 : x
2. Step 2: Convert to fraction form
   30,931.41/42,682.71 = 18,184.98/x
3. Step 3: Cross multiply
   30,931.41x = 42,682.71 × 18,184.98
4. Step 4: Simplify right side
   30,931.41x = 776,184,227.70
5. Step 5: Solve for x
   x = 776,184,227.70/30,931.41
6. Step 6: Final answer
   x = 25,093.72