Finding the Fourth Proportional to 22,145.72, 33,222.86 and 7,156.87

Step by Step Solution

1. Step 1: Write the proportion equation
   22,145.72 : 33,222.86 = 7,156.87 : x
2. Step 2: Convert to fraction form
   22,145.72/33,222.86 = 7,156.87/x
3. Step 3: Cross multiply
   22,145.72x = 33,222.86 × 7,156.87
4. Step 4: Simplify right side
   22,145.72x = 237,771,784.92
5. Step 5: Solve for x
   x = 237,771,784.92/22,145.72
6. Step 6: Final answer
   x = 10,736.69