Finding the Fourth Proportional to 12,123.49, 16,730.25 and 6,818.30

Step by Step Solution

1. Step 1: Write the proportion equation
   12,123.49 : 16,730.25 = 6,818.30 : x
2. Step 2: Convert to fraction form
   12,123.49/16,730.25 = 6,818.30/x
3. Step 3: Cross multiply
   12,123.49x = 16,730.25 × 6,818.30
4. Step 4: Simplify right side
   12,123.49x = 114,071,886.42
5. Step 5: Solve for x
   x = 114,071,886.42/12,123.49
6. Step 6: Final answer
   x = 9,409.17