Finding the Fourth Proportional to 22,300.86, 33,454.35 and 12,945.27

Step by Step Solution

1. Step 1: Write the proportion equation
   22,300.86 : 33,454.35 = 12,945.27 : x
2. Step 2: Convert to fraction form
   22,300.86/33,454.35 = 12,945.27/x
3. Step 3: Cross multiply
   22,300.86x = 33,454.35 × 12,945.27
4. Step 4: Simplify right side
   22,300.86x = 433,075,593.42
5. Step 5: Solve for x
   x = 433,075,593.42/22,300.86
6. Step 6: Final answer
   x = 19,419.68