Finding the Fourth Proportional to 28,196.67, 42,282.27 and 8,471.37

Step by Step Solution

1. Step 1: Write the proportion equation
   28,196.67 : 42,282.27 = 8,471.37 : x
2. Step 2: Convert to fraction form
   28,196.67/42,282.27 = 8,471.37/x
3. Step 3: Cross multiply
   28,196.67x = 42,282.27 × 8,471.37
4. Step 4: Simplify right side
   28,196.67x = 358,188,753.61
5. Step 5: Solve for x
   x = 358,188,753.61/28,196.67
6. Step 6: Final answer
   x = 12,703.23