Finding the Fourth Proportional to 19,906.52, 29,870.78 and 8,217

Step by Step Solution

1. Step 1: Write the proportion equation
   19,906.52 : 29,870.78 = 8,217 : x
2. Step 2: Convert to fraction form
   19,906.52/29,870.78 = 8,217/x
3. Step 3: Cross multiply
   19,906.52x = 29,870.78 × 8,217
4. Step 4: Simplify right side
   19,906.52x = 245,448,158.18
5. Step 5: Solve for x
   x = 245,448,158.18/19,906.52
6. Step 6: Final answer
   x = 12,330.04