Finding the Fourth Proportional to 12,124.12, 18,166.74 and 10,957.72

Step by Step Solution

1. Step 1: Write the proportion equation
   12,124.12 : 18,166.74 = 10,957.72 : x
2. Step 2: Convert to fraction form
   12,124.12/18,166.74 = 10,957.72/x
3. Step 3: Cross multiply
   12,124.12x = 18,166.74 × 10,957.72
4. Step 4: Simplify right side
   12,124.12x = 199,066,050.23
5. Step 5: Solve for x
   x = 199,066,050.23/12,124.12
6. Step 6: Final answer
   x = 16,419.01