Finding the Fourth Proportional to 22,400.01, 30,908.52 and 12,966.75

Step by Step Solution

1. Step 1: Write the proportion equation
   22,400.01 : 30,908.52 = 12,966.75 : x
2. Step 2: Convert to fraction form
   22,400.01/30,908.52 = 12,966.75/x
3. Step 3: Cross multiply
   22,400.01x = 30,908.52 × 12,966.75
4. Step 4: Simplify right side
   22,400.01x = 400,783,051.71
5. Step 5: Solve for x
   x = 400,783,051.71/22,400.01
6. Step 6: Final answer
   x = 17,892.09