Finding the Fourth Proportional to 12,199.56, 16,833.06 and 7,724.04

Step by Step Solution

1. Step 1: Write the proportion equation
   12,199.56 : 16,833.06 = 7,724.04 : x
2. Step 2: Convert to fraction form
   12,199.56/16,833.06 = 7,724.04/x
3. Step 3: Cross multiply
   12,199.56x = 16,833.06 × 7,724.04
4. Step 4: Simplify right side
   12,199.56x = 130,019,228.76
5. Step 5: Solve for x
   x = 130,019,228.76/12,199.56
6. Step 6: Final answer
   x = 10,657.70