Finding the Fourth Proportional to 30,658.18, 45,979.98 and 8,471.07

Step by Step Solution

1. Step 1: Write the proportion equation
   30,658.18 : 45,979.98 = 8,471.07 : x
2. Step 2: Convert to fraction form
   30,658.18/45,979.98 = 8,471.07/x
3. Step 3: Cross multiply
   30,658.18x = 45,979.98 × 8,471.07
4. Step 4: Simplify right side
   30,658.18x = 389,499,629.18
5. Step 5: Solve for x
   x = 389,499,629.18/30,658.18
6. Step 6: Final answer
   x = 12,704.59