Finding the Fourth Proportional to 22,117.72, 33,142.02 and 12,763.48

Step by Step Solution

1. Step 1: Write the proportion equation
   22,117.72 : 33,142.02 = 12,763.48 : x
2. Step 2: Convert to fraction form
   22,117.72/33,142.02 = 12,763.48/x
3. Step 3: Cross multiply
   22,117.72x = 33,142.02 × 12,763.48
4. Step 4: Simplify right side
   22,117.72x = 423,007,509.43
5. Step 5: Solve for x
   x = 423,007,509.43/22,117.72
6. Step 6: Final answer
   x = 19,125.28