Finding the Fourth Proportional to 12,228.40, 16,870.86 and 6,922.06

Step by Step Solution

1. Step 1: Write the proportion equation
   12,228.40 : 16,870.86 = 6,922.06 : x
2. Step 2: Convert to fraction form
   12,228.40/16,870.86 = 6,922.06/x
3. Step 3: Cross multiply
   12,228.40x = 16,870.86 × 6,922.06
4. Step 4: Simplify right side
   12,228.40x = 116,781,105.17
5. Step 5: Solve for x
   x = 116,781,105.17/12,228.40
6. Step 6: Final answer
   x = 9,549.99