Finding the Fourth Proportional to 12,117.33, 16,724.88 and 7,405.56

Step by Step Solution

1. Step 1: Write the proportion equation
   12,117.33 : 16,724.88 = 7,405.56 : x
2. Step 2: Convert to fraction form
   12,117.33/16,724.88 = 7,405.56/x
3. Step 3: Cross multiply
   12,117.33x = 16,724.88 × 7,405.56
4. Step 4: Simplify right side
   12,117.33x = 123,857,102.33
5. Step 5: Solve for x
   x = 123,857,102.33/12,117.33
6. Step 6: Final answer
   x = 10,221.48